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

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Exponent Range:










MnStatusDetails
2960161Factored
FactorDigitsBitsDate
174116188868720642078725432683.82021-11-13 00:00:39
ECM
DigitsB1Curves
255000088 / 280
Estimated T-Level: 21.6 ⓘ
TF below 2^67 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Chet Richards9B301D27B46DE1330
Verified (Factored)1999-05-30Marc North9B301D27B46DE133842964
Verified (Factored)2018-10-14kkmrkkblmbrbk9B301D27B46DE133769397
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2021-11-13SRJ287722D51252DF979114186088853
Verified2021-11-19LordJulius22D51252DF9791141261312953
History
DateUserTypeResult
2021-11-19curtiscCERT
PRP Certification
Proof certified good
2021-11-19LordJuliusC-PRP
M2960161/17411618886872064207872543 : 22D51252DF979114
PRP proof power = 7
PRP: Verified
Proof certified good
2021-11-13Team_InspectorCERT
PRP Certification
Proof certified good
2021-11-13SRJ2877C-PRP
M2960161/17411618886872064207872543 : 22D51252DF979114
PRP proof power = 7
PRP: Verified
Proof certified good
2021-11-13MarkSF-ECM
Factor: 17411618886872064207872543 / (ECM curve 6, B1=50000, B2=5000000, Sigma=3660193521628883)
2021-06-07TJAOINF
no factor from 2^68 to 2^69
2018-12-24chuenkitNF
no factor from 2^67 to 2^68
2018-10-14kkmrkkblmbrbkC-LL
9B301D27B46DE133
2017-12-03Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-26ramgeisNF
no factor from 2^65 to 2^66
2015-05-08VictordeHollanderNF-PM1
B1=1000000, B2=20000000, E=12
2015-04-29VictordeHollanderNF
no factor from 2^64 to 2^65
2015-04-29VictordeHollanderNF
no factor from 2^63 to 2^64
2013-01-07dbaughNF
no factor from 2^62 to 2^63
2011-12-09markrNF
no factor from 2^61 to 2^62
2010-10-31markrNF-PM1
B1=95000, B2=1995000, E=6
2009-02-13Sturle SundeNF
no factor from 2^60 to 2^61