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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
891557Factored
FactorDigitsBitsDate
105891058157916214912440172683.12009-08-31 05:35:25
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.
LL
StatusDateUserResidueShift
Verified (Factored)David SlowinskiD930
Verified (Factored)Bo Asklund32D6205300084D930
Verified (Factored)2002-01-28Marc Getty / Phil Fizur32D6205300084D93437071
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-09-28Oliver Kruse2201CA516A3AF11F1013
Verified2017-10-14Oliver Kruse2201CA516A3AF11F179024413
Verified2017-12-19ATH2201CA516A3AF11F157928613
Unverified (Reliable)2020-04-22Oliver Kruse58B4647AA25602__14908053
History
DateUserTypeResult
2024-03-18Anton TsvetkovNF-PM1
B1=8000000, B2=10000382700
2022-03-07LordJuliusNF
no factor from 2^58 to 2^59
2020-04-22Oliver KruseC-PRP
M891557/10589105815791621491244017 : 58B4647AA25602__
PRP: Unverified (Reliable)
PRP without proof (small exponent)
2017-12-19ATHC-PRP
M891557/10589105815791621491244017 : 2201CA516A3AF11F
PRP: Unverified (Reliable)
PRP without proof (small exponent)
2017-10-14Oliver KruseC-PRP
M891557/10589105815791621491244017 : 2201CA516A3AF11F
PRP: Unverified (Reliable)
PRP without proof (small exponent)
2017-09-28Oliver KruseC-PRP
M891557/10589105815791621491244017 : 2201CA516A3AF11F
PRP: Unverified (Reliable)
PRP without proof (not generated)
2016-03-17alpertronNF-PM1
B1=300000, B2=10000000, E=12
2009-08-31JimBaF-ECM
Factor: 10589105815791621491244017