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

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MnDetails
1907
Composite, with 2 known prime factors. Cofactor is PRP (Probable-Prime).
Trial Factored to 268
TF target 244
Factored
FactorDigitsBitsDate
16856964161434782985791532580.5old
549579229567201980511856813160299324944611143142.02008-11-22 12:25:27
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Factored
No proof (small exponent)
2017-11-16kkmrkkblmbrbkPRP_PRP_PRP_PRP_2128613
History
DateUserTypeResult
2017-11-16kkmrkkblmbrbkP-PRPM1907/1685696416143478298579153/5495792295672019805118568131602993249446111
PRP Cofactor
2008-11-22-anonymous-F-ECMFactor: 5495792295672019805118568131602993249446111