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
285151Factored
FactorDigitsBitsDate
88967113826.4old
22926140411031.12008-07-21 09:15:54
523223569911135.62008-07-21 09:15:54
59918610387178491652.42014-08-08 10:34:52
379131607063231985401707772685.02020-07-05 14:51:33
ECM
DigitsB1Curves
2550000280 / 280
30250000503 / 640
Estimated T-Level: 28.9 ⓘ
TF below 2^91 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified (Factored)2017-09-22Oliver Kruse01C18406F769F0F04013
Verified (Factored)2017-10-12Oliver Kruse01C18406F769F0F042327913
Verified (Factored)2017-11-06kkmrkkblmbrbk01C18406F769F0F0427040513
Verified (Factored)2020-04-17Oliver KruseBD46ABC8D4043DDD425939453
Verified2020-07-05riccardo ubertiBD46ABC8D4043DDD522710253
History
DateUserTypeResult
2023-02-06Kevin_9611NF-PM1
B1=10000000, B2=101194673580
2023-02-05Kevin_9611NF-PM1
B1=5000000, B2=21465474030
2023-02-04Kevin_9611NF-PM1
B1=1500000, B2=10732691970
2022-02-06Lisander ViaeneNF-PM1
B1=50000
2020-07-05riccardo ubertiC-PRP
M285151/88967113/2292614041/52322356991/5991861038717849/37913160706323198540170777 : BD46ABC8D4043DDD
PRP: Verified
PRP without proof (small exponent)
2020-07-05MarkSF-ECM
Factor: 37913160706323198540170777 / (ECM curve 1, B1=250000, B2=25000000, Sigma=3682103276756178)
2020-04-17Oliver KruseC-PRP
M285151/88967113/2292614041/52322356991/5991861038717849 : BD46ABC8D4043DDD
PRP: Verified
PRP without proof (small exponent)
2017-11-06kkmrkkblmbrbkC-PRP
M285151/88967113/2292614041/52322356991/5991861038717849 : 01C18406F769F0F0
PRP: Verified
PRP without proof (small exponent)
2017-10-12Oliver KruseC-PRP
M285151/88967113/2292614041/52322356991/5991861038717849 : 01C18406F769F0F0
PRP: Verified
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M285151/known_factors : 01C18406F769F0F0
PRP without proof (not generated)
2014-08-08TJAOIF
Factor: 5991861038717849
2008-07-21J FeitsmaF
Factor: 52322356991
2008-07-21J FeitsmaF
Factor: 2292614041