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

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Exponent Range:










MnStatusDetails
15054107Factored
FactorDigitsBitsDate
28455454778392746631554492581.22022-05-27 16:58:21
ECM
DigitsB1Curves
255000014 / 280
Estimated T-Level: 20.3
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)2003-02-16Scott KurowskiFC1CF1FBA4DD44A77890796
Verified (Factored)2006-03-01Marc Getty / Phil FizurFC1CF1FBA4DD44A711154279
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2023-06-13Perig1A2363D3FD9C0E7711063119553
History
DateUserTypeResult
2023-11-04nordiNF-PM1
B1=569000, B2=561249150
2023-10-21nordiNF-PM1
B1=569000
2023-06-13curtiscCERT
PRP Certification
Proof certified good
2023-06-13PerigC-PRP
M15054107/2845545477839274663155449 : 1A2363D3FD9C0E77
PRP proof power = 8
PRP: Verified
Proof certified good
2022-05-27ATHF-PP1
Start=2/7, B1=1000000, B2=29000000, Factor: 2845545477839274663155449
2022-03-06Dylan DelgadoNF
no factor from 2^72 to 2^73
2021-10-09-Anonymous-NF
no factor from 2^71 to 2^72
2021-09-03SRBaseNF
no factor from 2^70 to 2^71
2020-07-14YxinityNF
no factor from 2^69 to 2^70
2017-10-04ramgeisNF
no factor from 2^68 to 2^69
2016-02-08mikrNF
no factor from 2^67 to 2^68
2015-07-12ThaNF-PM1
B1=300000, B2=6000000, E=12
2014-06-11NesowaNF
no factor from 2^66 to 2^67
2014-06-11NesowaNF
no factor from 2^65 to 2^66