PrimeGrid
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PrimeGrid's Challenge Series

The PrimeGrid Challenge Series is an annual competition based on the results of monthly challenges.  The purpose of the Challenge is to spotlight a specific project within PrimeGrid's family of projects as well as to offer a little "healthy" competition for PrimeGrid's participants.  It is also an opportunity for people to learn more about each specific project and have fun doing it.  Below is a tentative schedule for 2020.

2008 Final Standings | 2009 Final Standings | 2010 Final Standings | 2011 Final Standings | 2012 Final Standings | 2013 Final Standings | 2014 Final Standings | 2015 Final Standings | 2016 Final Standings | 2017 Final Standings | 2018 Final Standings | 2019 Final Standings


2020 Challenge Series


DateTime UTCProject(s)ChallengeDurationResults
124-25 January00:00:00321-SieveInternational Education Day Challenge1 dayIndividuals | Teams
212-17 March06:00:00SR5-LLRYear of the Rat Challenge5 daysIndividuals | Teams
31-4 April12:00:00SGS-LLRSophie Germain's Birthday Challenge3 daysIndividuals | Teams
423-26 June22:00:00PPS-SieveAlan Turing's Birthday Challenge3 daysIndividuals | Teams
524-31 July20:00:00TRP-LLRKatherine Johnson Memorial Challenge7 daysIndividuals | Teams
63-6 September00:00:00PPSE-LLRInternational Bacon Day Challenge3 daysIndividuals | Teams
720-25 October06:00:00PPS-DIVÉvariste Galois Challenge5 daysIndividuals | Teams
818-28 November18:00:00CUL-LLR
WOO-LLR
Magellan 500th Anniversary Challenge10 daysIndividuals | Teams
921-31 December13:22:00GFN-18
GFN-19
GFN-20
Great Conjunction Challenge10 daysIndividuals | Teams



Current Overall Standings

Points will be awarded based on each challenge finish with an annual champion (individual and team) crowned at the end of each year.  Challenge points are awarded as follows based on order of finish:


Individual Challenge Points

Duration of Challenge
Place 1 Day 3 Day 5 Day 7 Day 10 Day 15 Day
11,000.01,500.02,000.02,500.03,250.03,650.0
2933.31,400.01,866.72,333.33,033.33,406.7
3866.71,300.01,733.32,166.72,816.73,163.3
4816.71,225.01,633.32,041.72,654.22,980.8
5766.71,150.01,533.31,916.72,491.72,798.3
6716.71,075.01,433.31,791.72,329.22,615.8
7683.31,025.01,366.71,708.32,220.82,494.2
8650.0975.01,300.01,625.02,112.52,372.5
9616.7925.01,233.31,541.72,004.22,250.8
10600.0900.01,200.01,500.01,950.02,190.0
11583.3875.01,166.71,458.31,895.82,129.2
12566.7850.01,133.31,416.71,841.72,068.3
13556.7835.01,113.31,391.71,809.22,031.8
14546.7820.01,093.31,366.71,776.71,995.3
15536.7805.01,073.31,341.71,744.21,958.8
16526.7790.01,053.31,316.71,711.71,922.3
17516.7775.01,033.31,291.71,679.21,885.8
18510.0765.01,020.01,275.01,657.51,861.5
19503.3755.01,006.71,258.31,635.81,837.2
20496.7745.0993.31,241.71,614.21,812.8
21490.0735.0980.01,225.01,592.51,788.5
22483.3725.0966.71,208.31,570.81,764.2
23476.7715.0953.31,191.71,549.21,739.8
24470.0705.0940.01,175.01,527.51,715.5
25463.3695.0926.71,158.31,505.81,691.2
26456.7685.0913.31,141.71,484.21,666.8
27450.0675.0900.01,125.01,462.51,642.5
28446.7670.0893.31,116.71,451.71,630.3
29443.3665.0886.71,108.31,440.81,618.2
30440.0660.0880.01,100.01,430.01,606.0
31436.7655.0873.31,091.71,419.21,593.8
32433.3650.0866.71,083.31,408.31,581.7
33430.0645.0860.01,075.01,397.51,569.5
34426.7640.0853.31,066.71,386.71,557.3
35423.3635.0846.71,058.31,375.81,545.2
36420.0630.0840.01,050.01,365.01,533.0
37416.7625.0833.31,041.71,354.21,520.8
38413.3620.0826.71,033.31,343.31,508.7
39410.0615.0820.01,025.01,332.51,496.5
40406.7610.0813.31,016.71,321.71,484.3
41403.3605.0806.71,008.31,310.81,472.2
42400.0600.0800.01,000.01,300.01,460.0
43397.3596.0794.7993.31,291.31,450.3
44394.7592.0789.3986.71,282.71,440.5
45392.0588.0784.0980.01,274.01,430.8
46389.3584.0778.7973.31,265.31,421.1
47386.7580.0773.3966.71,256.71,411.3
48384.0576.0768.0960.01,248.01,401.6
49381.3572.0762.7953.31,239.31,391.9
50378.7568.0757.3946.71,230.71,382.1
51376.0564.0752.0940.01,222.01,372.4
52373.3560.0746.7933.31,213.31,362.7
53370.7556.0741.3926.71,204.71,352.9
54368.0552.0736.0920.01,196.01,343.2
55365.3548.0730.7913.31,187.31,333.5
56362.7544.0725.3906.71,178.71,323.7
57360.0540.0720.0900.01,170.01,314.0
58357.3536.0714.7893.31,161.31,304.3
59354.7532.0709.3886.71,152.71,294.5
60352.0528.0704.0880.01,144.01,284.8
61349.3524.0698.7873.31,135.31,275.1
62346.7520.0693.3866.71,126.71,265.3
63344.0516.0688.0860.01,118.01,255.6
64341.3512.0682.7853.31,109.31,245.9
65338.7508.0677.3846.71,100.71,236.1
66336.0504.0672.0840.01,092.01,226.4
67333.7500.5667.3834.21,084.41,217.9
68331.3497.0662.7828.31,076.81,209.4
69329.0493.5658.0822.51,069.31,200.9
70326.7490.0653.3816.71,061.71,192.3
71324.3486.5648.7810.81,054.11,183.8
72322.0483.0644.0805.01,046.51,175.3
73319.7479.5639.3799.21,038.91,166.8
74317.3476.0634.7793.31,031.31,158.3
75315.0472.5630.0787.51,023.81,149.8
76312.7469.0625.3781.71,016.21,141.2
77310.3465.5620.7775.81,008.61,132.7
78308.0462.0616.0770.01,001.01,124.2
79305.7458.5611.3764.2993.41,115.7
80303.3455.0606.7758.3985.81,107.2
81301.0451.5602.0752.5978.21,098.7
82298.7448.0597.3746.7970.71,090.1
83296.3444.5592.7740.8963.11,081.6
84294.0441.0588.0735.0955.51,073.1
85291.7437.5583.3729.2947.91,064.6
86289.3434.0578.7723.3940.31,056.1
87287.0430.5574.0717.5932.71,047.6
88284.7427.0569.3711.7925.21,039.0
89282.3423.5564.7705.8917.61,030.5
90280.0420.0560.0700.0910.01,022.0
91277.7416.5555.3694.2902.41,013.5
92275.3413.0550.7688.3894.81,005.0
93273.0409.5546.0682.5887.3996.5
94270.7406.0541.3676.7879.7987.9
95268.3402.5536.7670.8872.1979.4
96266.0399.0532.0665.0864.5970.9
97263.7395.5527.3659.2856.9962.4
98261.7392.5523.3654.2850.4955.1
99259.7389.5519.3649.2843.9947.8
100257.7386.5515.3644.2837.4940.5
101255.7383.5511.3639.2830.9933.2
102253.7380.5507.3634.2824.4925.9
103251.7377.5503.3629.2817.9918.6
104249.7374.5499.3624.2811.4911.3
105247.7371.5495.3619.2804.9904.0
106245.7368.5491.3614.2798.4896.7
107243.7365.5487.3609.2791.9889.4
108241.7362.5483.3604.2785.4882.1
109239.7359.5479.3599.2778.9874.8
110237.7356.5475.3594.2772.4867.5
111235.7353.5471.3589.2765.9860.2
112233.7350.5467.3584.2759.4852.9
113231.7347.5463.3579.2752.9845.6
114229.7344.5459.3574.2746.4838.3
115227.7341.5455.3569.2739.9831.0
116225.7338.5451.3564.2733.4823.7
117223.7335.5447.3559.2726.9816.4
118221.7332.5443.3554.2720.4809.1
119219.7329.5439.3549.2713.9801.8
120217.7326.5435.3544.2707.4794.5
121215.7323.5431.3539.2700.9787.2
122213.7320.5427.3534.2694.4779.9
123211.7317.5423.3529.2687.9772.6
124209.7314.5419.3524.2681.4765.3
125207.7311.5415.3519.2674.9758.0
126205.7308.5411.3514.2668.4750.7
127203.7305.5407.3509.2661.9743.4
128201.7302.5403.3504.2655.4736.1
129199.7299.5399.3499.2648.9728.8
130197.7296.5395.3494.2642.4721.5
131195.7293.5391.3489.2635.9714.2
132193.7290.5387.3484.2629.4706.9
133192.0288.0384.0480.0624.0700.8
134190.3285.5380.7475.8618.6694.7
135188.7283.0377.3471.7613.2688.6
136187.0280.5374.0467.5607.8682.6
137185.3278.0370.7463.3602.3676.5
138183.7275.5367.3459.2596.9670.4
139182.0273.0364.0455.0591.5664.3
140180.3270.5360.7450.8586.1658.2
141178.7268.0357.3446.7580.7652.1
142177.0265.5354.0442.5575.3646.0
143175.3263.0350.7438.3569.8640.0
144173.7260.5347.3434.2564.4633.9
145172.0258.0344.0430.0559.0627.8
146170.3255.5340.7425.8553.6621.7
147168.7253.0337.3421.7548.2615.6
148167.0250.5334.0417.5542.8609.5
149165.3248.0330.7413.3537.3603.5
150163.7245.5327.3409.2531.9597.4
151162.0243.0324.0405.0526.5591.3
152160.3240.5320.7400.8521.1585.2
153158.7238.0317.3396.7515.7579.1
154157.0235.5314.0392.5510.3573.0
155155.3233.0310.7388.3504.8567.0
156153.7230.5307.3384.2499.4560.9
157152.0228.0304.0380.0494.0554.8
158150.3225.5300.7375.8488.6548.7
159148.7223.0297.3371.7483.2542.6
160147.0220.5294.0367.5477.8536.5
161145.3218.0290.7363.3472.3530.5
162143.7215.5287.3359.2466.9524.4
163142.0213.0284.0355.0461.5518.3
164140.3210.5280.7350.8456.1512.2
165138.7208.0277.3346.7450.7506.1
166137.0205.5274.0342.5445.3500.0
167135.3203.0270.7338.3439.8494.0
168133.7200.5267.3334.2434.4487.9
169132.0198.0264.0330.0429.0481.8
170130.7196.0261.3326.7424.7476.9
171129.3194.0258.7323.3420.3472.1
172128.0192.0256.0320.0416.0467.2
173126.7190.0253.3316.7411.7462.3
174125.3188.0250.7313.3407.3457.5
175124.0186.0248.0310.0403.0452.6
176122.7184.0245.3306.7398.7447.7
177121.3182.0242.7303.3394.3442.9
178120.0180.0240.0300.0390.0438.0
179118.7178.0237.3296.7385.7433.1
180117.3176.0234.7293.3381.3428.3
181116.0174.0232.0290.0377.0423.4
182114.7172.0229.3286.7372.7418.5
183113.3170.0226.7283.3368.3413.7
184112.0168.0224.0280.0364.0408.8
185110.7166.0221.3276.7359.7403.9
186109.3164.0218.7273.3355.3399.1
187108.0162.0216.0270.0351.0394.2
188106.7160.0213.3266.7346.7389.3
189105.3158.0210.7263.3342.3384.5
190104.0156.0208.0260.0338.0379.6
191102.7154.0205.3256.7333.7374.7
192101.3152.0202.7253.3329.3369.9
193100.0150.0200.0250.0325.0365.0
19498.7148.0197.3246.7320.7360.1
19597.3146.0194.7243.3316.3355.3
19696.0144.0192.0240.0312.0350.4
19794.7142.0189.3236.7307.7345.5
19893.3140.0186.7233.3303.3340.7
19992.0138.0184.0230.0299.0335.8
20090.7136.0181.3226.7294.7330.9
20189.3134.0178.7223.3290.3326.1
20288.0132.0176.0220.0286.0321.2
20386.7130.0173.3216.7281.7316.3
20485.3128.0170.7213.3277.3311.5
20584.0126.0168.0210.0273.0306.6
20683.0124.5166.0207.5269.8303.0
20782.0123.0164.0205.0266.5299.3
20881.0121.5162.0202.5263.3295.7
20980.0120.0160.0200.0260.0292.0
21079.0118.5158.0197.5256.8288.4
21178.0117.0156.0195.0253.5284.7
21277.0115.5154.0192.5250.3281.1
21376.0114.0152.0190.0247.0277.4
21475.0112.5150.0187.5243.8273.8
21574.0111.0148.0185.0240.5270.1
21673.0109.5146.0182.5237.3266.5
21772.0108.0144.0180.0234.0262.8
21871.0106.5142.0177.5230.8259.2
21970.0105.0140.0175.0227.5255.5
22069.0103.5138.0172.5224.3251.9
22168.0102.0136.0170.0221.0248.2
22267.0100.5134.0167.5217.8244.6
22366.099.0132.0165.0214.5240.9
22465.097.5130.0162.5211.3237.3
22564.096.0128.0160.0208.0233.6
22663.094.5126.0157.5204.8230.0
22762.093.0124.0155.0201.5226.3
22861.091.5122.0152.5198.3222.7
22960.090.0120.0150.0195.0219.0
23059.088.5118.0147.5191.8215.4
23158.087.0116.0145.0188.5211.7
23257.085.5114.0142.5185.3208.1
23356.084.0112.0140.0182.0204.4
23455.082.5110.0137.5178.8200.8
23554.081.0108.0135.0175.5197.1
23653.079.5106.0132.5172.3193.5
23752.078.0104.0130.0169.0189.8
23851.076.5102.0127.5165.8186.2
23950.075.0100.0125.0162.5182.5
24049.073.598.0122.5159.3178.9
24148.072.096.0120.0156.0175.2
24247.070.594.0117.5152.8171.6
24346.069.092.0115.0149.5167.9
24445.067.590.0112.5146.3164.3
24544.066.088.0110.0143.0160.6
24643.064.586.0107.5139.8157.0
24742.063.084.0105.0136.5153.3
24841.362.082.7103.3134.3150.9
24940.761.081.3101.7132.2148.4
25040.060.080.0100.0130.0146.0
25139.359.078.798.3127.8143.6
25238.758.077.396.7125.7141.1
25338.057.076.095.0123.5138.7
25437.356.074.793.3121.3136.3
25536.755.073.391.7119.2133.8
25636.054.072.090.0117.0131.4
25735.353.070.788.3114.8129.0
25834.752.069.386.7112.7126.5
25934.051.068.085.0110.5124.1
26033.350.066.783.3108.3121.7
26132.749.065.381.7106.2119.2
26232.048.064.080.0104.0116.8
26331.347.062.778.3101.8114.4
26430.746.061.376.799.7111.9
26530.045.060.075.097.5109.5
26629.344.058.773.395.3107.1
26728.743.057.371.793.2104.6
26828.042.056.070.091.0102.2
26927.341.054.768.388.899.8
27026.740.053.366.786.797.3
27126.039.052.065.084.594.9
27225.338.050.763.382.392.5
27324.737.049.361.780.290.0
27424.036.048.060.078.087.6
27523.335.046.758.375.885.2
27622.734.045.356.773.782.7
27722.033.044.055.071.580.3
27821.332.042.753.369.377.9
27920.731.041.351.767.275.4
28020.030.040.050.065.073.0
28119.329.038.748.362.870.6
28218.728.037.346.760.768.1
28318.027.036.045.058.565.7
28417.326.034.743.356.363.3
28516.725.033.341.754.260.8
28616.024.032.040.052.058.4
28715.323.030.738.349.856.0
28814.722.029.336.747.753.5
28914.021.028.035.045.551.1
29013.320.026.733.343.348.7
29112.719.025.331.741.246.2
29212.018.024.030.039.043.8
29311.317.022.728.336.841.4
29410.716.021.326.734.738.9
29510.015.020.025.032.536.5
2969.314.018.723.330.334.1
2978.713.017.321.728.231.6
2988.012.016.020.026.029.2
2997.311.014.718.323.826.8
3006.710.013.316.721.724.3




Team Challenge Points

Duration of Challenge
Place
1 Day
3 Day
5 Days
7 Days
10 Days
15 Days
1375.0500.0625.0750.01,000.01,125.0
2360.0480.0600.0720.0960.01,080.0
3345.0460.0575.0690.0920.01,035.0
4333.8445.0556.3667.5890.01,001.3
5322.5430.0537.5645.0860.0967.5
6311.3415.0518.8622.5830.0933.8
7300.0400.0500.0600.0800.0900.0
8288.8385.0481.3577.5770.0866.3
9277.5370.0462.5555.0740.0832.5
10270.0360.0450.0540.0720.0810.0
11262.5350.0437.5525.0700.0787.5
12255.0340.0425.0510.0680.0765.0
13247.5330.0412.5495.0660.0742.5
14240.0320.0400.0480.0640.0720.0
15232.5310.0387.5465.0620.0697.5
16225.0300.0375.0450.0600.0675.0
17217.5290.0362.5435.0580.0652.5
18210.0280.0350.0420.0560.0630.0
19202.5270.0337.5405.0540.0607.5
20197.3263.0328.8394.5526.0591.8
21192.0256.0320.0384.0512.0576.0
22186.8249.0311.3373.5498.0560.3
23181.5242.0302.5363.0484.0544.5
24176.3235.0293.8352.5470.0528.8
25171.0228.0285.0342.0456.0513.0
26165.8221.0276.3331.5442.0497.3
27160.5214.0267.5321.0428.0481.5
28155.3207.0258.8310.5414.0465.8
29150.0200.0250.0300.0400.0450.0
30144.8193.0241.3289.5386.0434.3
31139.5186.0232.5279.0372.0418.5
32134.3179.0223.8268.5358.0402.8
33129.0172.0215.0258.0344.0387.0
34125.3167.0208.8250.5334.0375.8
35121.5162.0202.5243.0324.0364.5
36117.8157.0196.3235.5314.0353.3
37114.0152.0190.0228.0304.0342.0
38110.3147.0183.8220.5294.0330.8
39106.5142.0177.5213.0284.0319.5
40102.8137.0171.3205.5274.0308.3
4199.0132.0165.0198.0264.0297.0
4295.3127.0158.8190.5254.0285.8
4391.5122.0152.5183.0244.0274.5
4487.8117.0146.3175.5234.0263.3
4584.0112.0140.0168.0224.0252.0
4680.3107.0133.8160.5214.0240.8
4776.5102.0127.5153.0204.0229.5
4874.399.0123.8148.5198.0222.8
4972.096.0120.0144.0192.0216.0
5069.893.0116.3139.5186.0209.3
5167.590.0112.5135.0180.0202.5
5265.387.0108.8130.5174.0195.8
5363.084.0105.0126.0168.0189.0
5460.881.0101.3121.5162.0182.3
5558.578.097.5117.0156.0175.5
5656.375.093.8112.5150.0168.8
5754.072.090.0108.0144.0162.0
5851.869.086.3103.5138.0155.3
5949.566.082.599.0132.0148.5
6047.363.078.894.5126.0141.8
6145.861.076.391.5122.0137.3
6244.359.073.888.5118.0132.8
6342.857.071.385.5114.0128.3
6441.355.068.882.5110.0123.8
6539.853.066.379.5106.0119.3
6638.351.063.876.5102.0114.8
6736.849.061.373.598.0110.3
6835.347.058.870.594.0105.8
6933.845.056.367.590.0101.3
7032.343.053.864.586.096.8
7130.841.051.361.582.092.3
7229.339.048.858.578.087.8
7327.837.046.355.574.083.3
7426.335.043.852.570.078.8
7524.833.041.349.566.074.3
7623.331.038.846.562.069.8
7721.829.036.343.558.065.3
7820.327.033.840.554.060.8
7918.825.031.337.550.056.3
8017.323.028.834.546.051.8
8115.821.026.331.542.047.3
8214.319.025.030.040.045.0
8313.518.023.828.538.042.8
8412.817.022.527.036.040.5
8512.016.021.325.534.038.3
8611.315.020.024.032.036.0
8710.514.018.822.530.033.8
889.813.017.521.028.031.5
899.012.016.319.526.029.3
908.311.015.018.024.027.0
917.510.013.816.522.024.8
926.89.012.515.020.022.5
936.08.011.313.518.020.3
945.37.010.012.016.018.0
954.56.08.810.514.015.8
963.85.07.59.012.013.5
973.04.06.37.510.011.3
982.33.05.06.08.09.0
991.52.03.84.56.06.8
100.81.02.53.04.04.5

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