Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
161221603Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
48137506896245005156812272.02018-07-08 18:34:39
History
DateUserTypeResult
2018-07-08yponomarevF
Factor: 4813750689624500515681 / TF: 72-73
2018-07-04di1111NF
no factor from 2^71 to 2^72
2018-07-03eziocmNF
no factor from 2^70 to 2^71
2017-02-03La GüiraNF
no factor from 2^69 to 2^70
2017-02-03La GüiraNF
no factor from 2^68 to 2^69
2016-03-17XZTNF
no factor from 2^67 to 2^68
2015-05-06yangyiNF
no factor from 2^66 to 2^67
2013-02-25Charles A. MorrisNF
no factor from 2^65 to 2^66
2011-04-05carlos56NF
no factor from 2^64 to 2^65
2010-06-30carlos56NF
no factor from 2^63 to 2^64