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

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MnDetails
1559
Composite, with 2 known prime factors. Cofactor is PRP (Probable-Prime).
Trial Factored to 268
TF target 244
Factored
FactorDigitsBitsDate
3119411.6old
138144956646902071722630375201415658140056447020800152169.92013-05-20 22:25:15
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Factored
No proof (small exponent)
2017-11-16kkmrkkblmbrbkPRP_PRP_PRP_PRP_2141413
History
DateUserTypeResult
2017-11-16kkmrkkblmbrbkP-PRPM1559/3119/1381449566469020717226303752014156581400564470208001
PRP Cofactor
2013-05-20Never Odd Or EvenF-ECMFactor: 1381449566469020717226303752014156581400564470208001