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
173Composite, with 3 known prime factors. Cofactor is PRP (Probable-Prime).
Factored
FactorDigitsBitsDate
730753619.5old
1505447720.5old
700844367125532231756.0old
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified (Factored)2018-01-24_p95holder_PRP_PRP_PRP_PRP_3013
History
DateUserTypeResult
2018-01-24_p95holder_P-PRP
M173/730753/1505447/70084436712553223 is a probable prime.