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
193985009Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
3219855377535363464472168.12015-09-09 12:55:13
History
DateUserTypeResult
2015-09-09demfloroF
Factor: 321985537753536346447 / TF: 68-69
2015-09-09demfloroNF
no factor from 2^66 to 2^68
2013-06-18sasaki3NF
no factor from 2^65 to 2^66
2011-04-18megavinkNF
no factor from 2^64 to 2^65
2010-08-08RichardNF
no factor from 2^63 to 2^64