Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

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MnStatusDetails
478862437Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
8207947741219431234172169.52017-12-13 06:40:08
History
DateUserTypeResult
2017-12-13ky0urakuF
Factor: 820794774121943123417 / TF: 69-70
2017-12-06ky0urakuNF
no factor from 2^68 to 2^69
2016-06-14sasakiNF
no factor from 2^67 to 2^68
2016-03-30sasakiNF
no factor from 2^66 to 2^67
2014-10-10GrunwalderGIMPNF
no factor from 2^65 to 2^66