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
1850357Factored
FactorDigitsBitsDate
76530765531032.8old
632192972631135.92008-07-15 07:47:23
2525926852604143571932167.82020-10-17 15:23:33
ECM
DigitsB1Curves
2550000280 / 280
30250000106 / 640
Estimated T-Level: 25.8 ⓘ
TF below 2^81 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified (Factored)2017-10-04Oliver Kruse115581B0140220A72013
Verified (Factored)2017-11-06ATH115581B0140220A7246742813
Verified2020-10-18mrh6BD9F6FC44A95EC93123276353
History
DateUserTypeResult
2020-10-18Valerio BellizzomiCERT
PRP Certification
Proof certified good
2020-10-18mrhC-PRP
M1850357/7653076553/63219297263/252592685260414357193 : 6BD9F6FC44A95EC9
PRP proof power = 7
PRP: Verified
Proof certified good
2020-10-17nordiF-ECM
Factor: 252592685260414357193 / (ECM curve 3, B1=50000, B2=5000000, Sigma=8918225344355869)
2017-11-06ATHC-PRP
M1850357/7653076553/63219297263 : 115581B0140220A7
PRP: Verified (Factored)
PRP without proof (not generated)
2017-10-04Oliver KruseC-PRP
M1850357/7653076553/63219297263 : 115581B0140220A7
PRP: Verified (Factored)
PRP without proof (not generated)
2016-03-16alpertronNF-PM1
B1=500000, B2=15000000, E=12
2008-07-15J FeitsmaF
Factor: 63219297263