15 · 2^1418605 + 1

This prime's information:

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 Fermat Divisors (bases 3,5,6,10,12) (archivable *)

Prime on list: no, rank 23, weight 46.728645887043
Subcategory: "Divides GF(*,6)"
(archival tag id 187057, tag last modified 2023-03-31 01:37:05)

Generalized Fermat Divisors (bases 3,5,6,10,12) (archivable *)

Prime on list: no, rank 22, weight 46.728645887043
Subcategory: "Divides GF(*,5)"
(archival tag id 187056, tag last modified 2024-03-22 08:37:11)

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Curtis Cooper writes (11 Sep 2014):  (report abuse)

15*2^1418605+1 is a Factor of xGF(1418603,4,3) 15*2^1418605+1 is a Factor of GF(1418600,5) 15*2^1418605+1 is a Factor of GF(1418601,6) 15*2^1418605+1 is a Factor of xGF(1418601,6,5) 15*2^1418605+1 is a Factor of GF(1418603,8) 15*2^1418605+1 is a Factor of xGF(1418603,8,5) 15*2^1418605+1 is a Factor of xGF(1418603,9,2) 15*2^1418605+1 is a Factor of xGF(1418603,10,9) 15*2^1418605+1 is a Factor of GF(1418604,11) 15*2^1418605+1 is a Factor of xGF(1418604,11,5) 15*2^1418605+1 is a Factor of xGF(1418604,11,6) 15*2^1418605+1 is a Factor of xGF(1418604,11,8)

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.