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

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Exponent Range:










MnStatusDetails
15197249Factored
FactorDigitsBitsDate
10077596824577638133150412579.72023-04-20 20:19:08
ECM
DigitsB1Curves
25500003 / 280
Estimated T-Level: 20.1
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)2002-12-16Imad R. Faiad66AD284204A9B1E16380237
Verified (Factored)2005-10-04Ars Technica Team Prime Rib66AD284204A9B1E111733036
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2023-04-21Naegi Makoto7817408C572CA5C911373653953
History
DateUserTypeResult
2023-11-04nordiNF-PM1
B1=480000, B2=462223146
2023-10-22nordiNF-PM1
B1=480000
2023-04-21heiopeiCERT
PRP Certification
Proof certified good
2023-04-21Naegi MakotoC-PRP
M15197249/1007759682457763813315041 : 7817408C572CA5C9
PRP proof power = 8
PRP: Verified
Proof certified good
2023-04-20ATHF-PP1
Start=2/7, B1=1000000, Factor: 1007759682457763813315041
2021-10-15-Anonymous-NF
no factor from 2^71 to 2^72
2021-09-06SRBaseNF
no factor from 2^70 to 2^71
2021-07-06lycornNF
no factor from 2^69 to 2^70
2017-10-11ramgeisNF
no factor from 2^68 to 2^69
2016-10-31mikrNF
no factor from 2^67 to 2^68
2014-05-14NesowaNF
no factor from 2^66 to 2^67
2014-05-14NesowaNF
no factor from 2^65 to 2^66