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

PrimeNet Exponent Status

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MnStatusDetails
1047587Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
14351941911030.4old
ECM
DigitsB1Curves
2550000280 / 280
30250000100 / 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)2025-09-01KrieselBC36C99AE8537315013
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-28Oliver Kruse73CD21D64996C97F1013
Verified2017-10-18kkmrkkblmbrbk73CD21D64996C97F158042813
History
DateUserTypeResult
2025-09-02carel van der westhuizenCERT
PRP Certification
CERT proof power = 6
Proof certified good
2025-09-01KrieselC-PRP
BC36C99AE8537315
PRP proof power = 6
PRP: Verified (Factored)
Proof certified good
2023-08-15Kevin_9611NF-PM1
B1=360000, B2=1138896990
2017-10-18kkmrkkblmbrbkC-PRP
M1047587/1435194191 : 73CD21D64996C97F
PRP: Verified
PRP without proof (not generated)
2017-09-28Oliver KruseC-PRP
M1047587/1435194191 : 73CD21D64996C97F
PRP: Verified
PRP without proof (not generated)
2016-03-17alpertronNF-PM1
B1=300000, B2=10000000, E=12