Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
328052783Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
28108815848680812703212271.32019-10-15 04:23:45
History
DateUserTypeResult
2019-10-15Smok_bmv F
Factor: 2810881584868081270321 / TF: 71-72*
2019-10-15Smok_bmv NF
no factor from 2^70 to 2^71
2019-03-01sasakiNF
no factor from 2^69 to 2^70
2018-08-19Chabot PrimeNF
no factor from 2^68 to 2^69
2017-01-01XolotlNF
no factor from 2^67 to 2^68
2016-03-18dbaughNF
no factor from 2^66 to 2^67
2014-08-08rubikvn2100NF
no factor from 2^65 to 2^66
2011-11-15OS1NF
no factor from 2^64 to 2^65