Marin Mersenne 2^P-1
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MnStatusDetails
245107Composite, with 1 known prime factor. Cofactor is PRP (Probable-Prime).
Factored
FactorDigitsBitsDate
4080846970661593162673543548808932105.02022-06-02 12:25:51
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000160 / 1566
Estimated T-Level: 30.5 ⓘ
TF below 2^96 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)David Slowinski3C950
Verified (Factored)Unknown3C950
Verified (Factored)Ken Kiefer80F96CAB71963C950
Verified (Factored)Brian J. Beesley80F96CAB71963C950
Verified (Factored)Eivind Triel80F96CAB71963C9540629
Verified (Factored)2016-06-01MadPoo80F96CAB71963C9536028
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2022-06-03SRJ2877PRP_PRP_PRP_PRP_1769013
P-1 factors
DateFactorB1B2
2022-06-02408084697066159316267354354880891220000005021421284880
History
DateUserTypeResult
2022-11-07George WoltmanCERT
PRP Certification
Proof certified good
2022-06-03Massimo Cappelli (ik5pwa)CERT
PRP Certification
Proof certified good
2022-06-03SRJ2877P-PRP
M245107/40808469706615931626735435488089 is a probable prime.
2022-06-02Sid & AndyF-PM1
Factor: 40808469706615931626735435488089 / (P-1, B1=122000000, B2=5021421284880)
2022-03-07LordJuliusNF
no factor from 2^54 to 2^55
2019-12-30Gordon SpenceNF
no factor from 2^65 to 2^66
2019-04-13alexNF-PM1
B1=100000000, B2=2000000000, E=12
2018-03-11Gordon SpenceNF
no factor from 2^64 to 2^65
2016-06-01MadPooC-LL
80F96CAB71963C95
2016-05-13NumberwangNF-PM1
B1=2741, B2=68525
2016-02-23Mark RoseNF
no factor from 2^57 to 2^58
2016-01-21Gordon SpenceNF
no factor from 2^63 to 2^64
2016-01-21Gordon SpenceNF
no factor from 2^62 to 2^63
2015-08-04snme2pm1NF
no factor from 2^61 to 2^62
2014-12-18Denial140NF-PM1
B1=10000000, B2=250000000, E=12
2013-10-12David CampeauNF-PM1
B1=2610000, B2=75690000, E=12
2013-07-15lycornNF
no factor from 2^60 to 2^61
2012-02-26JossNF-PM1
B1=2570995
2011-07-24JossNF-PM1
B1=2056796
2011-02-04JossNF-PM1
B1=2000000
2009-01-24Sturle SundeNF
no factor from 2^59 to 2^60
2008-12-31Sturle SundeNF
no factor from 2^58 to 2^59