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
221862863Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
2947434278168222525992168.02015-10-29 22:55:41
History
DateUserTypeResult
2015-10-29demfloroF
Factor: 294743427816822252599 / TF: 66-68
2013-08-26David CampeauNF
no factor from 2^65 to 2^66
2011-06-08Damian SilvestreNF
no factor from 2^64 to 2^65