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Message boards : Cullen/Woodall prime search : New Cullen Prime

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rogue
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Credit: 18,565,548
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PPS LLR Bronze: Earned 10,000 credits (31,229)PSA Jade: Earned 10,000,000 credits (18,533,435)
Message 14974 - Posted: 20 Apr 2009 | 23:12:57 UTC

It's about time that someone knocked my 3+ year old record off. What I find really interesting is that I found the largest known Woodall at the time at about the same time. Since then, 5 new Woodalls have been discovered. I am rather surprised that only one Cullen has been found in the same time period.

Now if we could just find that elusive GCW 13 Cullen or Woodall...

geoffProject donor
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Message 15016 - Posted: 22 Apr 2009 | 2:17:19 UTC - in response to Message 14974.

Congratulations Dennis and everyone else involved in this project, what a great find!

Profile DoESProject donor
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321 LLR Silver: Earned 100,000 credits (428,241)Cullen LLR Bronze: Earned 10,000 credits (13,527)PPS LLR Turquoise: Earned 5,000,000 credits (5,285,770)PSP LLR Bronze: Earned 10,000 credits (25,590)SoB LLR Bronze: Earned 10,000 credits (64,434)SGS LLR Bronze: Earned 10,000 credits (37,858)TRP LLR Bronze: Earned 10,000 credits (28,770)Woodall LLR Bronze: Earned 10,000 credits (21,547)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (2,268,579)PPS Sieve Emerald: Earned 50,000,000 credits (65,056,064)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Bronze: Earned 10,000 credits (77,216)TRP Sieve (suspended) Bronze: Earned 10,000 credits (30,429)PSA Gold: Earned 500,000 credits (960,939)
Message 15136 - Posted: 26 Apr 2009 | 0:23:47 UTC - in response to Message 15016.


Yes -- congrats on an excellent prime number -- but I am a little curious as to why it shows as 6328548 x 2 ^ 6328548 + 1 in Prime Grid and when you look at Chris Caldwell's list it is 1582137 x 2 ^ 6328550 + 1 --- ??????

DoES
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"If we knew what it was we were doing, it would not be called research, would it?"
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rogue
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Joined: 8 Sep 07
Posts: 1146
ID: 12001
Credit: 18,565,548
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PPS LLR Bronze: Earned 10,000 credits (31,229)PSA Jade: Earned 10,000,000 credits (18,533,435)
Message 15137 - Posted: 26 Apr 2009 | 0:31:43 UTC - in response to Message 15136.

Because 6328548 = 1582137 * 2^2. Since this is base 2, the Prime Pages will divide k by that base (if it can) and store the number that way.

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Joined: 11 Oct 08
Posts: 779
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Credit: 74,302,485
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321 LLR Silver: Earned 100,000 credits (428,241)Cullen LLR Bronze: Earned 10,000 credits (13,527)PPS LLR Turquoise: Earned 5,000,000 credits (5,285,770)PSP LLR Bronze: Earned 10,000 credits (25,590)SoB LLR Bronze: Earned 10,000 credits (64,434)SGS LLR Bronze: Earned 10,000 credits (37,858)TRP LLR Bronze: Earned 10,000 credits (28,770)Woodall LLR Bronze: Earned 10,000 credits (21,547)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (2,268,579)PPS Sieve Emerald: Earned 50,000,000 credits (65,056,064)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Bronze: Earned 10,000 credits (77,216)TRP Sieve (suspended) Bronze: Earned 10,000 credits (30,429)PSA Gold: Earned 500,000 credits (960,939)
Message 15138 - Posted: 26 Apr 2009 | 3:36:32 UTC - in response to Message 15137.

Because 6328548 = 1582137 * 2^2. Since this is base 2, the Prime Pages will divide k by that base (if it can) and store the number that way.



Fair enough---( just curious)
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Albert Einstein

mfbabb2Project donor
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321 LLR Bronze: Earned 10,000 credits (78,297)Cullen LLR Silver: Earned 100,000 credits (158,791)ESP LLR Silver: Earned 100,000 credits (144,400)Generalized Cullen/Woodall LLR Silver: Earned 100,000 credits (119,226)PPS LLR Silver: Earned 100,000 credits (118,905)PSP LLR Silver: Earned 100,000 credits (177,569)SoB LLR Silver: Earned 100,000 credits (172,304)SR5 LLR Bronze: Earned 10,000 credits (38,345)SGS LLR Silver: Earned 100,000 credits (102,401)TRP LLR Silver: Earned 100,000 credits (118,541)Woodall LLR Gold: Earned 500,000 credits (584,650)321 Sieve (suspended) Bronze: Earned 10,000 credits (20,307)Cullen/Woodall Sieve (suspended) Silver: Earned 100,000 credits (200,096)Generalized Cullen/Woodall Sieve Bronze: Earned 10,000 credits (31,680)PPS Sieve Silver: Earned 100,000 credits (311,660)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Bronze: Earned 10,000 credits (20,039)TRP Sieve (suspended) Silver: Earned 100,000 credits (100,597)AP 26/27 Silver: Earned 100,000 credits (194,685)GFN Ruby: Earned 2,000,000 credits (2,429,487)PSA Silver: Earned 100,000 credits (211,837)
Message 39825 - Posted: 30 Aug 2011 | 22:36:42 UTC - in response to Message 39321.

Perhaps you meant "Because 6328548 = 1582137 * 4^2." ?

No, 2^2 is correct (=4).
____________
Murphy (AtP)



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Message boards : Cullen/Woodall prime search : New Cullen Prime

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