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
168388399Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
26639177153513562486232271.22018-03-29 04:30:05
History
DateUserTypeResult
2018-03-29ky0urakuF
Factor: 2663917715351356248623 / TF: 71-72
2018-03-27RobertNNF
no factor from 2^70 to 2^71
2018-02-27ZenghuiNF
no factor from 2^70 to 2^71
2018-02-20ZenghuiNF
no factor from 2^69 to 2^70
2017-04-27Andrew BNF
no factor from 2^68 to 2^69
2016-04-04XZTNF
no factor from 2^67 to 2^68
2015-06-29AWTownNF
no factor from 2^66 to 2^67
2013-03-23sasaki3NF
no factor from 2^65 to 2^66
2011-02-16sasaki3NF
no factor from 2^64 to 2^65
2010-07-07oodairaNF
no factor from 2^63 to 2^64