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

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Exponent Range:










MnStatusDetails
11493257Factored
FactorDigitsBitsDate
861165387063719190361432376.22023-05-05 16:50:21
ECM
DigitsB1Curves
255000080 / 280
Estimated T-Level: 21.4 ⓘ
TF below 2^66 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)2001-04-15Ari Mäkinen143D9B8E82E51B529239320
Verified (Factored)2005-02-02Frank Supperl143D9B8E82E51B523016366
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2023-05-06riccardo uberti37BA82A04C0439741763121553
History
DateUserTypeResult
2023-05-09riccardo ubertiNF-PP1
Start=6/5, B1=2500000, B2=50000000
2023-05-08riccardo ubertiNF-PM1
B1=8000000, B2=21589789650
2023-05-06curtiscCERT
PRP Certification
Proof certified good
2023-05-06riccardo ubertiC-PRP
M11493257/86116538706371919036143 : 37BA82A04C043974
PRP proof power = 8
PRP: Verified
Proof certified good
2023-05-05riccardo ubertiF-PP1
Start=2/7, B1=2000000, B2=40000000, Factor: 86116538706371919036143
2023-03-24riccardo ubertiNF-PM1
B1=1500000, B2=102858210
2023-02-22riccardo ubertiNF
no factor from 2^71 to 2^72
2021-08-15SRBaseNF
no factor from 2^70 to 2^71
2021-08-06SRBaseNF
no factor from 2^69 to 2^70
2018-01-01ramgeisNF
no factor from 2^68 to 2^69
2018-01-01ramgeisNF
no factor from 2^67 to 2^68
2016-01-15VictordeHollanderNF
no factor from 2^66 to 2^67
2015-03-15NesowaNF
no factor from 2^65 to 2^66
2013-11-09lycornNF
no factor from 2^64 to 2^65