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

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MnStatusDetails
2758531Factored
FactorDigitsBitsDate
70046955760660247861365727692892.52020-12-05 12:40:12
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)1998-04-27INTERSHOP Communications8A733B64E9E330330
Bad1999-08-31Michael Lim6850E70167D7D5831942727
Verified (Factored)2000-03-27David Campeau8A733B64E9E330332656818
Verified (Factored)2018-08-16kkmrkkblmbrbk8A733B64E9E330331103678
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2020-12-05SRJ2877169BD06AF77185D41131770253
History
DateUserTypeResult
2020-12-05XebecerCERT
PRP Certification
Proof certified good
2020-12-05SRJ2877C-PRP
M2758531/7004695576066024786136572769 : 169BD06AF77185D4
PRP proof power = 7
PRP: Verified
Proof certified good
2020-12-05rextheruntF-ECM
Factor: 7004695576066024786136572769 / (ECM curve 6, B1=50000, B2=5000000)
2019-02-21chuenkitNF
no factor from 2^67 to 2^68
2018-08-16kkmrkkblmbrbkC-LL
8A733B64E9E33033
2017-10-09Gordon SpenceNF
no factor from 2^66 to 2^67
2017-01-03mikrNF-PM1
B1=2700000, B2=84000000, E=12
2016-02-23Mark RoseNF
no factor from 2^59 to 2^60
2016-02-05ramgeisNF
no factor from 2^65 to 2^66
2015-05-08Squeeky_SquirrelNF-PM1
B1=195000, B2=6045000, E=12
2015-04-21VictordeHollanderNF
no factor from 2^64 to 2^65
2015-04-21VictordeHollanderNF
no factor from 2^63 to 2^64
2014-10-19JossNF-PM1
B1=123268
2014-04-22JossNF-PM1
B1=100000
2014-04-16JossNF-PM1
B1=60000
2013-01-14dbaughNF
no factor from 2^62 to 2^63
2012-03-21markrNF
no factor from 2^61 to 2^62
2009-01-31Sturle SundeNF
no factor from 2^60 to 2^61