849 · 2478885 + 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: | 849 · 2478885 + 1 |
|---|---|
| Verification status (*): | Proven |
| Official Comment (*): | [none] |
| Unofficial Comments: | This prime has 1 user comment below. |
| Proof-code(s): (*): | L670 : McKibbon, Srsieve, PrimeGrid, LLR |
| Decimal Digits: | 144162 (log10 is 144161.67838124) |
| Rank (*): | 42246 (digit rank is 1) |
| Entrance Rank (*): | 2062 |
| Currently on list? (*): | no |
| Submitted: | 12/30/2008 06:01:28 UTC |
| Last modified: | 3/11/2023 15:54:10 UTC |
| Removed (*): | 1/16/2010 21:05:43 UTC |
| Database id: | 86077 |
| Status Flags: | none |
| Score (*): | 40.6807 (normalized score 0.0135) |
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 86077 person_id 9 machine Ditto P4 P4 what trial_divided notes Command: /home/ditto/client/TrialDiv/TrialDiv -q 849 2 478885 1 2>&1 [Elapsed time: 9.739 seconds] modified 2020-07-07 22:30:39 created 2008-12-30 06:05:01 id 101622
field value prime_id 86077 person_id 9 machine Ditto P4 P4 what prime notes Command: /home/ditto/client/pfgw -t -q"849*2^478885+1" 2>&1 PFGW Version 20031027.x86_Dev (Beta 'caveat utilitor') [FFT v22.13 w/P4] Primality testing 849*2^478885+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 7 Using SSE2 FFT Adjusting authentication level by 1 for PRIMALITY PROOF Reduced from FFT(57344,20) to FFT(57344,19) Reduced from FFT(57344,19) to FFT(57344,18) Reduced from FFT(57344,18) to FFT(57344,17) 957798 bit request FFT size=(57344,17) Calling Brillhart-Lehmer-Selfridge with factored part 100.00% 849*2^478885+1 is prime! (1158.8400s+0.0000s) [Elapsed time: 20.17 minutes] modified 2020-07-07 22:30:39 created 2008-12-30 06:08:01 id 101623
Query times: 0.0002 seconds to select prime, 0.0003 seconds to seek comments.
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