PrimeGrid
Please visit donation page to help the project cover running costs for this month

Sponsored by:

Hosted at and sponsored by Rackspace.

Join PrimeGrid

Returning Participants

Community

Leader Boards

Results

Other

drummers-lowrise

Advanced search

Message boards : Cullen/Woodall prime search : Question about Cullen/Woodall

Author Message
rvoskoboynikov
Send message
Joined: 4 May 17
Posts: 41
ID: 865286
Credit: 70,198,778
RAC: 8,152
Discovered 1 mega primeFound 1 prime in the 2018 Tour de Primes321 LLR Silver: Earned 100,000 credits (175,356)Cullen LLR Silver: Earned 100,000 credits (174,572)ESP LLR Silver: Earned 100,000 credits (121,328)Generalized Cullen/Woodall LLR Silver: Earned 100,000 credits (341,146)PPS LLR Turquoise: Earned 5,000,000 credits (9,359,272)PSP LLR Silver: Earned 100,000 credits (141,489)SoB LLR Ruby: Earned 2,000,000 credits (2,143,146)SR5 LLR Silver: Earned 100,000 credits (162,872)SGS LLR Ruby: Earned 2,000,000 credits (2,021,102)TRP LLR Silver: Earned 100,000 credits (366,858)Woodall LLR Silver: Earned 100,000 credits (217,132)Generalized Cullen/Woodall Sieve Gold: Earned 500,000 credits (656,417)PPS Sieve Jade: Earned 10,000,000 credits (10,099,516)AP 26/27 Jade: Earned 10,000,000 credits (10,895,885)GFN Sapphire: Earned 20,000,000 credits (28,299,466)PSA Turquoise: Earned 5,000,000 credits (5,023,220)
Message 109357 - Posted: 14 Aug 2017 | 22:47:05 UTC

What are the chances that another Cullen/Woodall prime is never found again?

JeppeSNProject donor
Send message
Joined: 5 Apr 14
Posts: 680
ID: 306875
Credit: 8,447,024
RAC: 5,157
321 LLR Bronze: Earned 10,000 credits (48,835)ESP LLR Bronze: Earned 10,000 credits (13,226)PPS LLR Gold: Earned 500,000 credits (606,650)SoB LLR Silver: Earned 100,000 credits (132,293)SR5 LLR Bronze: Earned 10,000 credits (16,010)TRP LLR Bronze: Earned 10,000 credits (14,746)PSA Turquoise: Earned 5,000,000 credits (7,614,290)
Message 109367 - Posted: 15 Aug 2017 | 17:15:25 UTC

"Never"? I think the probability is very low. It would be quite sensational (to me) if none new are found before the year 2067. See history of Cullen primes greater than 10^999 on Caldwell's Cullen Top 20. Also see Sloane's OEIS Cullen entry with links. Similar pages exist for Woodall, Caldwell, Sloane. /JeppeSN

Post to thread

Message boards : Cullen/Woodall prime search : Question about Cullen/Woodall

[Return to PrimeGrid main page]
Copyright © 2005 - 2018 Rytis Slatkevičius (contact) and PrimeGrid community. Server load 2.24, 2.01, 1.50
Generated 21 Jul 2018 | 10:08:21 UTC