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
15153419Factored
FactorDigitsBitsDate
9189597858590348823280873672789.62022-11-22 19:44:47
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)2002-06-02Chris Duncombe Rae85DF248BCD12D2A715012696
Verified (Factored)2006-01-15Ahmer Ali85DF248BCD12D2A712158639
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2023-05-27Dobri21D1E01994CC16711842797353
History
DateUserTypeResult
2023-11-05nordiNF-PM1
B1=480000, B2=449768550
2023-10-22nordiNF-PM1
B1=480000
2023-06-04Mark BlankeCERT
PRP Certification
Proof certified good
2023-05-27DobriC-PRP
M15153419/918959785859034882328087367 : 21D1E01994CC1671
PRP proof power = 8
PRP: Verified
Proof certified good
2022-11-22ATHF-PP1
Start=2/7, B1=1000000, Factor: 918959785859034882328087367
2021-10-10-Anonymous-NF
no factor from 2^71 to 2^72
2021-09-02SRBaseNF
no factor from 2^70 to 2^71
2021-07-01lycornNF
no factor from 2^69 to 2^70
2017-12-24ramgeisNF
no factor from 2^68 to 2^69
2017-12-24ramgeisNF
no factor from 2^67 to 2^68
2016-08-07ThaNF-PM1
B1=300000, B2=6000000, E=12
2016-03-16Mark RoseNF
no factor from 2^65 to 2^66
2014-05-14NesowaNF
no factor from 2^66 to 2^67