
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:   197676570 · 18851280661 · Bern(1836)/(59789 · 3927024469727) 
Verification status (*):  PRP 
Official Comment:  Irregular, ECPP 
Unofficial Comments:  This prime has 1 user comment below. 
Proofcode(s): (*):  c8 : Water, Broadhurst, Primo 
Decimal Digits:  3734 (log_{10} is 3733.18001478) 
Rank (*):  83049 (digit rank is 1) 
Entrance Rank (*):  32180 
Currently on list? (*):  short 
Submitted:  11/20/2003 09:03:29 CDT 
Last modified:  11/20/2003 09:03:29 CDT 
Database id:  67302 
Status Flags:  Verify 
Score (*):  29.3809 (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.
 Irregular Primes (archivable *)
 Prime on list: yes, rank 16
Subcategory: "Irregular Primes"
(archival tag id 178331, tag last modified 20161118 02:20:40)  Elliptic Curve Primality Proof (archivable *)
 Prime on list: no, rank 483
Subcategory: "ECPP"
(archival tag id 178332, tag last modified 20170606 13:20:22)
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  67302 
person_id  9 
machine  Linux P4 2.8GHz 
what  prp 
notes  PFGW Version 20031027.x86_Dev (Beta 'caveat utilitor') [FFT v22.13 w/P4] Primality testing 1513612772...3522251053 [N1/N+1, BrillhartLehmerSelfridge] trial factoring to 987133 Running N1 test using base 2 Using SSE2 FFT Adjusting authentication level by 1 for PRIMALITY PROOF Reduced from FFT(1536,21) to FFT(1536,20) Reduced from FFT(1536,20) to FFT(1536,19) Reduced from FFT(1536,19) to FFT(1536,18) Reduced from FFT(1536,18) to FFT(1536,17) 24812 bit request FFT size=(1536,17) Running N1 test using base 5 Using SSE2 FFT Adjusting authentication level by 1 for PRIMALITY PROOF Reduced from FFT(1536,21) to FFT(1536,20) Reduced from FFT(1536,20) to FFT(1536,19) Reduced from FFT(1536,19) to FFT(1536,18) Reduced from FFT(1536,18) to FFT(1536,17) 24812 bit request FFT size=(1536,17) Running N1 test using base 19 Using SSE2 FFT Adjusting authentication level by 1 for PRIMALITY PROOF Reduced from FFT(1536,21) to FFT(1536,20) Reduced from FFT(1536,20) to FFT(1536,19) Reduced from FFT(1536,19) to FFT(1536,18) Reduced from FFT(1536,18) to FFT(1536,17) 24812 bit request FFT size=(1536,17) Running N+1 test using discriminant 29, base 3+sqrt(29) Using SSE2 FFT Adjusting authentication level by 1 for PRIMALITY PROOF Reduced from FFT(1536,21) to FFT(1536,20) Reduced from FFT(1536,20) to FFT(1536,19) Reduced from FFT(1536,19) to FFT(1536,18) Reduced from FFT(1536,18) to FFT(1536,17) 24820 bit request FFT size=(1536,17) Calling N1 BLS with factored part 0.25% and helper 0.10% (0.86% proof) 1513612772...3522251053 is Fermat and Lucas PRP! (14.5559s+0.0017s)

modified  20031120 09:19:20 
created  20031120 09:19:05 
id  72235 

Query times: 0.0002 seconds to select prime, 0.0001 seconds to seek comments.
