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

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MnStatusDetails
2353577Factored
FactorDigitsBitsDate
22239196343164011014602312580.92021-03-10 02:18:41
ECM
DigitsB1Curves
2550000131 / 280
Estimated T-Level: 22.3 ⓘ
TF below 2^69 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Robert MashlanA47812A3B18888F10
Verified (Factored)1999-05-30XaelA47812A3B18888F1518880
Verified (Factored)2018-05-10kkmrkkblmbrbkA47812A3B18888F1199061
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2021-03-10Kriesel8385D4D1280FE6A31121831153
History
DateUserTypeResult
2021-03-10SirbudrickCERT
PRP Certification
Proof certified good
2021-03-10KrieselC-PRP
M2353577/2223919634316401101460231 : 8385D4D1280FE6A3
PRP proof power = 7
PRP: Verified
Proof certified good
2021-03-10ZenzomaF-ECM
Factor: 2223919634316401101460231 / (ECM curve 5, B1=50000, B2=5000000, Sigma=3954625953585542)
2019-05-06TJAOINF
no factor from 2^67 to 2^68
2018-05-10kkmrkkblmbrbkC-LL
A47812A3B18888F1
2018-02-12Sid & AndyNF-PM1
B1=6000000, B2=180000000, E=12
2017-06-10Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^1 to 2^60
2015-10-27ramgeisNF
no factor from 2^65 to 2^66
2015-03-06VictordeHollanderNF
no factor from 2^64 to 2^65
2015-03-06VictordeHollanderNF
no factor from 2^63 to 2^64
2013-12-04Jerry HallettNF
no factor from 2^62 to 2^63
2013-12-04c10ck3rNF-PM1
B1=500000, B2=10000000, E=12
2012-05-29Sebastian HornbostelNF
no factor from 2^61 to 2^62
2011-01-22Oscar ÖstlinNF-PM1
B1=90000, B2=1822500, E=6
2010-12-04Oscar ÖstlinNF-PM1
B1=75011
2010-11-03JossNF-PM1
B1=20000
2009-01-15Sturle SundeNF
no factor from 2^60 to 2^61