355 · 2285492 + 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: | 355 · 2285492 + 1 |
|---|---|
| Verification status (*): | Proven |
| Official Comment (*): | [none] |
| Proof-code(s): (*): | p161 : Harvey, FermFact, OpenPFGW |
| Decimal Digits: | 85945 (log10 is 85944.205750454) |
| Rank (*): | 55267 (digit rank is 1) |
| Entrance Rank (*): | 2451 |
| Currently on list? (*): | no |
| Submitted: | 12/24/2005 19:59:34 UTC |
| Last modified: | 3/11/2023 15:54:10 UTC |
| Removed (*): | 4/15/2007 15:07:30 UTC |
| Database id: | 76538 |
| Status Flags: | none |
| Score (*): | 39.0875 (normalized score 0.0017) |
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 76538 person_id 9 machine Linux P4 2.8GHz what prime notes Command: /home/caldwell/client/pfgw -f -t -q"355*2^285492+1" 2>&1 PFGW Version 20031027.x86_Dev (Beta 'caveat utilitor') [FFT v22.13 w/P4] Primality testing 355*2^285492+1 [N-1, Brillhart-Lehmer-Selfridge] trial factoring to 28994068 Running N-1 test using base 3 Using SSE2 FFT Adjusting authentication level by 1 for PRIMALITY PROOF Reduced from FFT(32768,20) to FFT(32768,19) Reduced from FFT(32768,19) to FFT(32768,18) 571010 bit request FFT size=(32768,18) Calling Brillhart-Lehmer-Selfridge with factored part 100.00% 355*2^285492+1 is prime! (1025.6213s+0.0392s) [Elapsed time: 1026 seconds] modified 2020-07-07 22:30:43 created 2005-12-24 20:23:00 id 81931
field value prime_id 76538 person_id 9 machine Linux P4 2.8GHz what trial_divided notes Command: /home/caldwell/client/TrialDiv/TrialDiv -q 355 2 285492 1 2>&1 [Elapsed time: 13.036 seconds] modified 2020-07-07 22:30:43 created 2005-12-24 20:22:01 id 81929
Query times: 0.0003 seconds to select prime, 0.0004 seconds to seek comments.
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