U(1493, - 1, 4621)
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This prime's information:
Description: | U(1493, - 1, 4621) |
---|---|
Verification status (*): | PRP |
Official Comment (*): | Generalized Lucas number |
Unofficial Comments: | This prime has 1 user comment below. |
Proof-code(s): (*): | CH3 : Broadhurst, Water, OpenPFGW, Primo, CHG |
Decimal Digits: | 14665 (log10 is 14664.157211627) |
Rank (*): | 77778 (digit rank is 1) |
Entrance Rank (*): | 25187 |
Currently on list? (*): | no |
Submitted: | 10/5/2005 04:16:25 UTC |
Last modified: | 3/11/2023 15:54:10 UTC |
Database id: | 75826 |
Status Flags: | Verify |
Score (*): | 33.6259 (normalized score 0) |
Archival tags:
There are certain forms classed as archivable: these prime may (at times) remain on this list even if they do not make the Top 5000 proper. Such primes are tracked with archival tags.
- Generalized Lucas Number (archivable *)
- Prime on list: no, rank 28
Subcategory: "Generalized Lucas Number"
(archival tag id 192558, tag last modified 2023-10-24 02:37:13)
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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 75826 person_id 9 machine Linux P4 2.8GHz what prp notes Command: /home/caldwell/client/pfgw -f -tc -q"lucasU(1493,-1,4621)" 2>&1 PFGW Version 20031027.x86_Dev (Beta 'caveat utilitor') [FFT v22.13 w/P4] Primality testing lucasU(1493,-1,4621) [N-1/N+1, Brillhart-Lehmer-Selfridge] trial factoring to 4344106 Running N-1 test using base 3 Using SSE2 FFT Adjusting authentication level by 1 for PRIMALITY PROOF Reduced from FFT(6144,21) to FFT(6144,20) Reduced from FFT(6144,20) to FFT(6144,19) Reduced from FFT(6144,19) to FFT(6144,18) Reduced from FFT(6144,18) to FFT(6144,17) Reduced from FFT(6144,17) to FFT(6144,16) 97436 bit request FFT size=(6144,16) Running N-1 test using base 11 Using SSE2 FFT Adjusting authentication level by 1 for PRIMALITY PROOF Reduced from FFT(6144,21) to FFT(6144,20) Reduced from FFT(6144,20) to FFT(6144,19) Reduced from FFT(6144,19) to FFT(6144,18) Reduced from FFT(6144,18) to FFT(6144,17) Reduced from FFT(6144,17) to FFT(6144,16) 97436 bit request FFT size=(6144,16) Running N+1 test using discriminant 17, base 6+sqrt(17) Using SSE2 FFT Adjusting authentication level by 1 for PRIMALITY PROOF Reduced from FFT(6144,21) to FFT(6144,20) Reduced from FFT(6144,20) to FFT(6144,19) Reduced from FFT(6144,19) to FFT(6144,18) Reduced from FFT(6144,18) to FFT(6144,17) Reduced from FFT(6144,17) to FFT(6144,16) 97444 bit request FFT size=(6144,16) Running N+1 test using discriminant 17, base 8+sqrt(17) Using SSE2 FFT Adjusting authentication level by 1 for PRIMALITY PROOF Reduced from FFT(6144,21) to FFT(6144,20) Reduced from FFT(6144,20) to FFT(6144,19) Reduced from FFT(6144,19) to FFT(6144,18) Reduced from FFT(6144,18) to FFT(6144,17) Reduced from FFT(6144,17) to FFT(6144,16) 97444 bit request FFT size=(6144,16) Running N+1 test using discriminant 17, base 10+sqrt(17) Using SSE2 FFT Adjusting authentication level by 1 for PRIMALITY PROOF Reduced from FFT(6144,21) to FFT(6144,20) Reduced from FFT(6144,20) to FFT(6144,19) Reduced from FFT(6144,19) to FFT(6144,18) Reduced from FFT(6144,18) to FFT(6144,17) Reduced from FFT(6144,17) to FFT(6144,16) 97444 bit request FFT size=(6144,16) Calling N-1 BLS with factored part 1.13% and helper 0.51% (3.92% proof) lucasU(1493,-1,4621) is Fermat and Lucas PRP! (594.2252s+0.0145s) [Elapsed time: 594 seconds] modified 2020-07-07 22:30:43 created 2005-10-05 04:23:01 id 81012
Query times: 0.0002 seconds to select prime, 0.0003 seconds to seek comments.
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