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
271488781Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
2574649638309814408572167.82016-10-25 17:40:01
History
DateUserTypeResult
2016-10-25Mikhail E. GolosovF
Factor: 257464963830981440857 / TF: 67-68
2016-01-14rubikvn2100NF
no factor from 2^66 to 2^67
2013-11-29Lukin DmitryNF
no factor from 2^65 to 2^66
2011-08-29sasaki3NF
no factor from 2^64 to 2^65
2010-03-27csabaNF
no factor from 2^63 to 2^64
2010-03-27csabaNF
no factor from 2^62 to 2^63