Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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Exponent Range:










MnStatusDetails
207197Factored
FactorDigitsBitsDate
139446983633120745538220835198277789671140130.02022-06-09 01:35:34
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000257 / 1566
Estimated T-Level: 30.8 ⓘ
TF below 2^97 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Allan Menezes7B59C9260AB622BD0
Verified (Factored)Kevin N. Carpenter7B59C9260AB622BD0
Verified (Factored)Eivind Triel7B59C9260AB622BD159172
Verified (Factored)2002-12-16Brian J. Beesley7B59C9260AB622BD56142
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2022-06-09 some-studentsB38A0988AB52E7D8115056953
Verified2022-06-09LordJuliusB38A0988AB52E7D815206953
Verified2023-08-03USAFSSB38A0988AB52E7D8115997653
P-1 factors
DateFactorB1B2
2022-06-0913944698363312074553822083519827778967111480000006916103083890
History
DateUserTypeResult
2023-08-03curtiscCERT
PRP Certification
Proof certified good
2023-08-03USAFSSC-PRP
M207197/1394469836331207455382208351982777896711 : B38A0988AB52E7D8
PRP proof power = 5
PRP: Verified
Proof certified good
2022-06-11curtiscCERT
PRP Certification
Proof certified good
2022-06-09Cosmos95CERT
PRP Certification
Proof certified good
2022-06-09LordJuliusC-PRP
M207197/1394469836331207455382208351982777896711 : B38A0988AB52E7D8
PRP proof power = 5
PRP: Verified
Proof certified good
2022-06-09 some-studentsC-PRP
M207197/1394469836331207455382208351982777896711 : B38A0988AB52E7D8
PRP proof power = 5
PRP: Verified
Proof certified good
2022-06-09Sid & AndyF-PM1
Factor: 1394469836331207455382208351982777896711 / (P-1, B1=148000000, B2=6916103083890)
2022-03-07LordJuliusNF
no factor from 2^54 to 2^55
2021-05-28NumberwangNF-PM1
B1=10000000, B2=300000000
2020-10-29Gordon SpenceNF
no factor from 2^66 to 2^67
2019-12-15Gordon SpenceNF
no factor from 2^65 to 2^66
2018-02-26Gordon SpenceNF
no factor from 2^64 to 2^65
2016-02-23Mark RoseNF
no factor from 2^57 to 2^58
2016-01-06Gordon SpenceNF
no factor from 2^63 to 2^64
2016-01-06Gordon SpenceNF
no factor from 2^62 to 2^63
2015-06-26mikrNF-PM1
B1=50000000, B2=2550000000, E=12
2015-06-08snme2pm1NF
no factor from 2^61 to 2^62
2013-08-04lycornNF
no factor from 2^60 to 2^61
2009-03-15axnNF-PM1
B1=5000000, B2=200000000, E=12
2009-02-06Sturle SundeNF
no factor from 2^59 to 2^60
2009-01-01Sturle SundeNF
no factor from 2^58 to 2^59