At this site we maintain a list of the 5000 Largest Known Primes which is updated hourly. This list is the most important databases at The Prime Pages: a collection of research, records and results all about prime numbers. This page summarizes our information about one of these primes.

This prime's information:

field (help) value Description: 26329808338725 · 2666666 - 1 Verification status (*): Proven Official Comment: Proof-code(s): (*): L2079 : Rakowski, TwinGen, PrimeGrid, LLR Decimal Digits: 200700   (log10 is 200699.88353702) Rank (*): 24013 (digit rank is 156) Entrance Rank (*): 4950 Currently on list? (*): no Submitted: 11/1/2011 10:24:13 CDT Last modified: 11/1/2011 10:50:50 CDT Removed (*): 11/5/2011 18:49:53 CDT Database id: 102639 Status Flags: none Score (*): 41.699 (normalized score 0.0973)

Verification data:

The Top 5000 Primes is a list for proven primes only. In order to maintain the integrity of this list, we seek to verify the primality of all submissions.  We are currently unable to check all proofs (ECPP, KP, ...), but we will at least trial divide and PRP check every entry before it is included in the list.

field value prime_id 102639 person_id 9 machine RedHat Virtual STEM Server what prime notes Command: /home/caldwell/client/llr.pl 26329808338725*2^666666-1 2>&1 Starting Lucas Lehmer Riesel prime test of 26329808338725*2^666666-1 Using Zero Padded IBDWT : Mersenne fftlen = 32768, Used fftlen = 81920 V1 = 5 ; Computing U0... V1 = 5 ; Computing U0...done.Starting Lucas-Lehmer loop... 26329808338725*2^666666-1 is prime! Time : 951.990 sec. [Elapsed time: 16.32 minutes] modified 2011-12-27 16:48:27 created 2011-11-01 10:25:51 id 134869

field value prime_id 102639 person_id 9 machine Ditto P4 P4 what trial_divided notes Command: /home/ditto/client/TrialDiv/TrialDiv -q 26329808338725 2 666666 -1 2>&1 [Elapsed time: 9.883 seconds] modified 2011-12-27 16:48:27 created 2011-11-01 10:35:02 id 134870