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

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Exponent Range:










MnStatusDetails
2003191Factored
FactorDigitsBitsDate
2250071023548512480196014301133097.52021-11-04 09:47:24
ECM
DigitsB1Curves
2550000280 / 280
30250000155 / 640
Estimated T-Level: 26.2
TF below 2^82 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
BadPeter Brundel5415EBAC6445CBBD0
Verified (Factored)1999-03-01Florin Clapa01A925F1955F0DF3166731
Verified (Factored)1999-05-23Carlo Baffa01A925F1955F0DF31405283
Verified (Factored)2015-10-29MadPoo01A925F1955F0DF31668921
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2021-11-04SRJ2877A35E88686DCB61FB13369753
History
DateUserTypeResult
2021-11-04Ben DeloCERT
PRP Certification
Proof certified good
2021-11-04SRJ2877C-PRP
M2003191/225007102354851248019601430113 : A35E88686DCB61FB
PRP proof power = 7
PRP: Verified
Proof certified good
2021-11-04mikrF-PP1
Start=129/71, B1=30000000, B2=1620000000, Factor: 225007102354851248019601430113
2020-09-30Bruno VictalNF-PM1
B1=10000000, B2=350000000
2019-12-03mikrNF
no factor from 2^71 to 2^72
2018-12-03mikrNF-PM1
B1=4000000, B2=200000000, E=12
2018-07-03JossNF-PM1
B1=2003191, B2=80127640, E=12
2018-05-25JossNF-PM1
B1=2003191, B2=4006382, E=6
2016-02-23Mark RoseNF
no factor from 2^58 to 2^60
2015-12-18ramgeisNF
no factor from 2^70 to 2^71
2015-10-29MadPooC-LL
01A925F1955F0DF3
2015-08-23ramgeisNF
no factor from 2^69 to 2^70
2015-08-23ramgeisNF
no factor from 2^68 to 2^69
2015-03-11BloodIceNF
no factor from 2^67 to 2^68
2015-03-11BloodIceNF
no factor from 2^66 to 2^67
2015-03-11BloodIceNF
no factor from 2^65 to 2^66
2015-03-11BloodIceNF
no factor from 2^64 to 2^65
2015-03-11BloodIceNF
no factor from 2^63 to 2^64
2013-10-07David CampeauNF-PM1
B1=580000, B2=15080000, E=12
2013-02-05dbaughNF
no factor from 2^62 to 2^63
2011-12-23Sebastian HornbostelNF
no factor from 2^61 to 2^62
2010-11-23JossNF-PM1
B1=200319
2009-01-02Sturle SundeNF
no factor from 2^60 to 2^61