252191 · 25497878 - 1
At this site we maintain a list of the 5000 Largest Known Primes which is updated hourly. This list is the most important PrimePages database: 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:
| Description: | 252191 · 25497878 - 1 |
|---|---|
| Verification status (*): | Proven |
| Official Comment (*): | [none] |
| Unofficial Comments: | This prime has 1 user comment below. |
| Proof-code(s): (*): | L3183 : Haller, Srsieve, PrimeGrid, LLR |
| Decimal Digits: | 1655032 (log10 is 1655031.5922307) |
| Rank (*): | 500 (digit rank is 1) |
| Entrance Rank (*): | 21 |
| Currently on list? (*): | yes |
| Submitted: | 6/23/2012 17:22:47 UTC |
| Last modified: | 3/11/2023 15:54:10 UTC |
| Database id: | 107886 |
| Status Flags: | none |
| Score (*): | 48.1783 (normalized score 21.0729) |
User comments about this prime (disclaimer):
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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 107886 person_id 9 machine RedHat P4 P4 what prime notes Command: /home/caldwell/client/llr.pl 252191*2^5497878-1 2>&1 Starting Lucas Lehmer Riesel prime test of 252191*2^5497878-1 Using Zero Padded IBDWT : Mersenne fftlen = 327680, Used fftlen = 655360 V1 = 4 ; Computing U0... V1 = 4 ; Computing U0...done. Starting Lucas-Lehmer loop... 252191*2^5497878-1 is prime! Time : 126342.229 sec. [Elapsed time: 35.10 hours] modified 2020-07-07 22:30:25 created 2012-06-23 17:23:01 id 145358
field value prime_id 107886 person_id 9 machine Ditto P4 P4 what trial_divided notes Command: /home/ditto/client/TrialDiv/TrialDiv -q 252191 2 5497878 -1 2>&1 [Elapsed time: 11.332 seconds] modified 2020-07-07 22:30:25 created 2012-06-23 17:35:12 id 145360
Query times: 0.0002 seconds to select prime, 0.0004 seconds to seek comments.
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