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

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MnDetails
193
Composite, with 2 known prime factors. Cofactor is PRP (Probable-Prime).
Trial Factored to 268
TF target 244
Factored
FactorDigitsBitsDate
13821503823.7old
616544402332483406165592375.7old
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Factored
No proof (small exponent)
2018-01-24_p95holder_PRP_PRP_PRP_PRP_2013
History
DateUserTypeResult
2018-01-24_p95holder_P-PRPM193/13821503/61654440233248340616559
PRP Cofactor