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

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MnStatusDetails
2403053Factored
FactorDigitsBitsDate
73609791538705706193672272.62020-07-14 13:52:31
ECM
DigitsB1Curves
255000063 / 280
Estimated T-Level: 21.1 ⓘ
TF below 2^65 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Adam Kumiszcza8B98ABB8156172280
Verified (Factored)1999-03-15Ian Peattie8B98ABB815617228439139
Verified (Factored)2018-05-18kkmrkkblmbrbk8B98ABB8156172281666273
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2020-07-17Kirill FrolovB06FE84DC2953D341151166253
Verified2020-07-17LaurVB06FE84DC2953D341150745953
History
DateUserTypeResult
2020-07-17LaurVC-PRP
M2403053/7360979153870570619367 : B06FE84DC2953D34
PRP: Verified
PRP without proof (not generated)
2020-07-17Kirill FrolovC-PRP
M2403053/7360979153870570619367 : B06FE84DC2953D34
PRP: Verified
PRP without proof (not generated)
2020-07-14GANF-ECM
Factor: 7360979153870570619367 / (ECM curve 1, B1=50000, B2=5000000, Sigma=878769911981418)
2019-02-04YxinityNF
no factor from 2^69 to 2^70
2019-01-25Anton RepkoNF
no factor from 2^67 to 2^69
2018-05-18kkmrkkblmbrbkC-LL
8B98ABB815617228
2017-06-29Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^1 to 2^60
2015-10-21ramgeisNF
no factor from 2^65 to 2^66
2015-02-27VictordeHollanderNF
no factor from 2^64 to 2^65
2015-02-27VictordeHollanderNF
no factor from 2^63 to 2^64
2014-02-19mikrNF-PM1
B1=3102822, B2=43439508, E=12
2013-12-04Jerry HallettNF
no factor from 2^62 to 2^63
2012-06-03Sebastian HornbostelNF
no factor from 2^61 to 2^62
2010-12-22markrNF-PM1
B1=95000, B2=1923750, E=6
2010-11-16JossNF-PM1
B1=20000
2010-11-08JossNF-PM1
B1=15000
2009-01-16Sturle SundeNF
no factor from 2^60 to 2^61