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

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MnStatusDetails
747763Factored
FactorDigitsBitsDate
2395577358637858428925254390173808427138124.22022-05-08 10:06:47
ECM
DigitsB1Curves
2550000280 / 280
30250000107 / 640
Estimated T-Level: 25.8
TF below 2^81 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Ken Kriesel56D7A7D441E77EA90
Verified (Factored)Cornelius Caesar56D7A7D441E77EA90
Verified (Factored)2003-05-04Brian J. Beesley56D7A7D441E77EA9457634
Verified (Factored)2016-06-01MadPoo56D7A7D441E77EA9225144
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2022-05-08SRJ28773B5E005278E6C0FF155585753
P-1 factors
DateFactorB1B2
2022-05-082395577358637858428925254390173808427176000001203456454200
History
DateUserTypeResult
2022-05-08K. JeongCERT
PRP Certification
Proof certified good
2022-05-08SRJ2877C-PRP
M747763/23955773586378584289252543901738084271 : 3B5E005278E6C0FF
PRP proof power = 6
PRP: Verified
Proof certified good
2022-05-08lycornF-PM1
Factor: 23955773586378584289252543901738084271 / (P-1, B1=7600000, B2=1203456454200)
2022-03-25Gordon SpenceNF
no factor from 2^67 to 2^68
2020-05-15Gordon SpenceNF
no factor from 2^66 to 2^67
2017-10-13Smok_bmv NF
no factor from 2^65 to 2^66
2016-06-01MadPooC-LL
56D7A7D441E77EA9
2016-04-08lycornNF
no factor from 2^64 to 2^65
2015-11-23Sid & AndyNF-PM1
B1=7477630, B2=224328900, E=12
2015-10-20Gordon SpenceNF
no factor from 2^63 to 2^64
2015-10-20Gordon SpenceNF
no factor from 2^62 to 2^63
2015-03-05NRNF
no factor from 2^61 to 2^62
2013-10-27David CampeauNF-PM1
B1=1525000, B2=51850000, E=12
2012-07-14JossNF-PM1
B1=1495526
2011-10-22JossNF-PM1
B1=968584
2011-08-15JossNF-PM1
B1=484292
2011-06-19JossNF-PM1
B1=400000
2010-06-24Architects CubedNF
no factor from 2^60 to 2^61
2008-10-13Sturle SundeNF
no factor from 2^59 to 2^60
2008-10-13Sturle SundeNF
no factor from 2^58 to 2^59