Marin Mersenne 2^P-1
Username
Password
Forgot password?
Blue
Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
10203883Factored
FactorDigitsBitsDate
102038831926.6old
317748916631134.92008-09-08 06:27:45
15627654969831340.52008-09-08 06:27:45
283289177372668635432064.62017-11-22 12:46:14
1781412766897513709932167.32022-01-22 13:07:56
ECM
DigitsB1Curves
255000067 / 280
Estimated T-Level: 21.2 ⓘ
TF below 2^65 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified (Factored)2020-02-16Bommer0EFA28E41FD82A964678155753
Verified (Factored)2021-02-08XZT0EFA28E41FD82A964779431653
Verified2022-01-28riccardo uberti0EFA28E41FD82A965944150353
History
DateUserTypeResult
2022-08-07riccardo ubertiNF-PP1
Start=6/5, B1=2300000, B2=60000000
2022-08-06riccardo ubertiNF-PP1
Start=2/7, B1=2000000, B2=50000000
2022-03-22LordJuliusNF
no factor from 2^66 to 2^67
2022-03-22LordJuliusNF
no factor from 2^65 to 2^66
2022-01-28riccardo ubertiNF-PM1
B1=2000000, B2=40000000
2022-01-28Massimo Cappelli (ik5pwa)CERT
PRP Certification
Proof certified good
2022-01-28riccardo ubertiC-PRP
M10203883/102038831/31774891663/1562765496983/28328917737266863543/178141276689751370993 : 0EFA28E41FD82A96
PRP proof power = 8
PRP: Verified
Proof certified good
2022-01-22ViliamFNF
no factor from 2^68 to 2^69
2022-01-22ViliamFNF
no factor from 2^67 to 2^68
2022-01-22ViliamFF
Factor: 178141276689751370993 / TF: 67-68
2021-02-08C.D.B.CERT
PRP Certification
Proof certified good
2021-02-08XZTC-PRP
M10203883/102038831/31774891663/1562765496983/28328917737266863543 : 0EFA28E41FD82A96
PRP proof power = 8
PRP: Verified (Factored)
Proof certified good
2020-02-16BommerC-PRP
M10203883/102038831/31774891663/1562765496983/28328917737266863543 : 0EFA28E41FD82A96
PRP: Verified (Factored)
PRP without proof (not generated)
2017-11-22TJAOIF
Factor: 28328917737266863543 / TF: 64-65
2008-09-08Will EdgingtonF
Factor: 1562765496983
2008-09-08Will EdgingtonF
Factor: 31774891663