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
1540753Composite: proven not-prime with both PRP and Lucas-Lehmer tests
TF
No factors below 268
TF target 261
TF below 2^81 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 21300000
B2 = 81923311470
ECM
DigitsB1Curves
2550000280 / 280
30250000106 / 640
Estimated T-Level: 25.8 ⓘ
LL
StatusDateUserResidueShift
VerifiedJason BockFF21D7D82ACB6B850
Verified1998-10-25Shawn StrickerFF21D7D82ACB6B85899332
Verified2015-06-27MadPooFF21D7D82ACB6B85586031
PRP
StatusDateUserResidueShiftTypeBase
Verified2025-09-02KrieselAF01EDE0773C2DD9013
History
DateUserTypeResult
2025-09-03Carlos PinhoCERT
PRP Certification
CERT proof power = 6
Proof certified good
2025-09-02KrieselC-PRP
AF01EDE0773C2DD9
PRP proof power = 6
PRP: Verified
Proof certified good
2023-09-28Sid & AndyNF-PM1
B1=21300000, B2=81923311470
2023-06-29JossNF-PM1
B1=10001000, B2=9816975630
2023-02-22JossNF-PM1
B1=10001000, B2=3563469000
2022-12-23JossNF-PM1
B1=10001000, B2=1200523170
2018-06-06ramgeisNF
no factor from 2^67 to 2^68
2018-02-19TJAOINF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^58 to 2^60
2016-02-23Mark RoseNF
no factor from 2^61 to 2^62
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2015-10-11ramgeisNF
no factor from 2^65 to 2^66
2015-06-27MadPooC-LL
FF21D7D82ACB6B85
2015-03-16VictordeHollanderNF-PM1
B1=10000000, B2=200000000, E=12
2015-02-11snme2pm1NF
no factor from 2^64 to 2^65
2015-02-11snme2pm1NF
no factor from 2^63 to 2^64
2013-11-23David CampeauNF-PM1
B1=945000, B2=27405000, E=12
2011-02-02James HeinrichNF-PM1
B1=80000, B2=1340000, E=6
2010-05-12GrunwalderGIMPNF
no factor from 2^1 to 2^63
2010-04-27Architects CubedNF
no factor from 2^60 to 2^61