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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
1356007Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
37886835591031.8old
ECM
DigitsB1Curves
2550000280 / 280
30250000105 / 640
Estimated T-Level: 25.8
TF below 2^81 is very unlikely to find new factors due to ECM effort.
PRP
StatusDateUserResidueShiftTypeBase
Verified (Factored)2025-09-01Kriesel1C0EB4E336694772013
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-30Oliver KruseBDE0C7437AAA81C31013
Verified2017-10-23kkmrkkblmbrbkBDE0C7437AAA81C3137318313
History
DateUserTypeResult
2025-09-03Evil GeniusCERT
PRP Certification
CERT proof power = 6
Proof certified good
2025-09-01KrieselC-PRP
1C0EB4E336694772
PRP proof power = 6
PRP: Verified (Factored)
Proof certified good
2017-10-23kkmrkkblmbrbkC-PRP
M1356007/3788683559 : BDE0C7437AAA81C3
PRP: Verified
PRP without proof (not generated)
2017-09-30Oliver KruseC-PRP
M1356007/3788683559 : BDE0C7437AAA81C3
PRP: Verified
PRP without proof (not generated)
2016-03-17alpertronNF-PM1
B1=500000, B2=15000000, E=12