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
572749Factored
FactorDigitsBitsDate
1922475926579902782792173532787.32021-06-04 15:52:46
12084204506739855445236080349421828936116.52019-04-18 01:30:56
ECM
DigitsB1Curves
2550000280 / 280
30250000210 / 640
Estimated T-Level: 26.6 ⓘ
TF below 2^83 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)David Slowinski1D310
Verified (Factored)Ken Kriesel4D5468C4AF8A1D310
Verified (Factored)Klaus Kastens4D5468C4AF8A1D31184114
Verified (Factored)2015-04-11MadPoo4D5468C4AF8A1D31321933
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified (Factored)2019-04-18trebor0C02A9C2A3AD2CB8149372153
Verified (Factored)2019-04-21arnaud0C02A9C2A3AD2CB8127875053
Verified2021-06-04ZacHFX0C02A9C2A3AD2CB8222036353
P-1 factors
DateFactorB1B2
2019-04-1812084204506739855445236080349421828910000000400000000
History
DateUserTypeResult
2022-03-07LordJuliusNF
no factor from 2^54 to 2^55
2021-06-04Steve SybesmaCERT
PRP Certification
Proof certified good
2021-06-04ZacHFXC-PRP
M572749/120842045067398554452360803494218289/192247592657990278279217353 : 0C02A9C2A3AD2CB8
PRP proof power = 6
PRP: Verified
Proof certified good
2021-06-04TJAOIF-ECM
Factor: 192247592657990278279217353 / (ECM curve 34, B1=250000, B2=35000000)
2019-04-21arnaudC-PRP
M572749/120842045067398554452360803494218289 : 0C02A9C2A3AD2CB8
PRP: Verified (Factored)
PRP without proof (small exponent)
2019-04-18treborC-PRP
M572749/120842045067398554452360803494218289 : 0C02A9C2A3AD2CB8
PRP: Verified (Factored)
PRP without proof (small exponent)
2019-04-18alexF-PM1
Factor: 120842045067398554452360803494218289 / (P-1, B1=10000000, B2=400000000, E=12)
2018-06-04chuenkitNF
no factor from 2^65 to 2^66
2017-11-16BloodERazorNF
no factor from 2^64 to 2^65
2016-02-23Mark RoseNF
no factor from 2^58 to 2^60
2016-02-23Mark RoseNF
no factor from 2^60 to 2^61
2015-09-16Gordon SpenceNF
no factor from 2^63 to 2^64
2015-09-16Gordon SpenceNF
no factor from 2^62 to 2^63
2015-07-12NRNF
no factor from 2^61 to 2^62
2015-04-21Sid & AndyNF-PM1
B1=5727490, B2=171824700, E=12
2015-04-11MadPooC-LL
4D5468C4AF8A1D31
2013-09-28David CampeauNF-PM1
B1=1040000, B2=32240000, E=12
2012-03-05JossNF-PM1
B1=855388
2011-08-24JossNF-PM1
B1=684310
2011-07-01JossNF-PM1
B1=410586