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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
4811537Factored
FactorDigitsBitsDate
577769362971135.7old
222487536901677539581932374.22019-06-06 16:27:39
281163966258537457694009903112994.52023-10-26 19:59:54
ECM
DigitsB1Curves
25500002 / 280
Estimated T-Level: 20.0 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified (Factored)2017-11-20Chang Chia-Tche71E158FD71D3FCCB1351536053
Verified (Factored)2018-01-08kkmrkkblmbrbk71E158FD71D3FCCB1154389653
Verified (Factored)2019-06-14ANONYMOUS71E158FD71D3FCCB2277806953
Verified2023-10-30Naegi Makoto71E158FD71D3FCCB342519853
P-1 factors
DateFactorB1B2
2023-10-262811639662585374576940099031124000091991760
History
DateUserTypeResult
2023-10-30Wojciech FlorekCERT
PRP Certification
Proof certified good
2023-10-30Naegi MakotoC-PRP
M4811537/57776936297/22248753690167753958193/28116396625853745769400990311 : 71E158FD71D3FCCB
PRP proof power = 7
PRP: Verified
Proof certified good
2023-10-26USAFSSF-PM1
Factor: 28116396625853745769400990311 / (P-1, B1=240000, B2=91991760)
2019-06-14ANONYMOUSC-PRP
M4811537/57776936297/22248753690167753958193 : 71E158FD71D3FCCB
PRP: Verified (Factored)
PRP without proof (not generated)
2019-06-06MarkSF-ECM
Factor: 22248753690167753958193 / (ECM curve 2, B1=50000, B2=5000000)
2018-01-08kkmrkkblmbrbkC-PRP
M4811537/57776936297 : 71E158FD71D3FCCB
PRP: Verified (Factored)
PRP without proof (not generated)
2017-11-20Chang Chia-TcheC-PRP
M4811537/57776936297 : 71E158FD71D3FCCB
PRP: Verified (Factored)
PRP without proof (not generated)