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
223061Factored
FactorDigitsBitsDate
6785669562345931261712172479.22009-04-23 01:07:39
7820104032462305612253930681373099.32021-01-05 19:53:04
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000189 / 1566
Estimated T-Level: 30.6
TF below 2^97 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Unknown11D00
Verified (Factored)James Young83550575B9EA91D00
Verified (Factored)Brian J. Beesley83550575B9EA91D00
Verified (Factored)Eivind Triel83550575B9EA91D0133912
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-09-22Oliver Kruse46655973F780BD991013
Verified (Factored)2017-10-12kkmrkkblmbrbk46655973F780BD99114095013
Verified (Factored)2020-04-17Oliver Kruse29C23812A0A3E502116704553
Verified2021-01-05riccardo uberti29C23812A0A3E50223961953
History
DateUserTypeResult
2022-03-10Oliver KruseNF-PM1
B1=30000000, B2=10070832992220
2022-03-07LordJuliusNF
no factor from 2^57 to 2^58
2022-03-07LordJuliusNF
no factor from 2^54 to 2^55
2021-06-07Oliver KruseNF-PM1
B1=30000000, B2=3000000000
2021-01-05GregCERT
PRP Certification
Proof certified good
2021-01-05riccardo ubertiC-PRP
M223061/678566956234593126171217/782010403246230561225393068137 : 29C23812A0A3E502
PRP proof power = 5
PRP: Verified
Proof certified good
2021-01-05_p95holder_F-ECM
Factor: 782010403246230561225393068137 / (ECM curve 5, B1=250000, B2=25000000)
2020-04-17Oliver KruseC-PRP
M223061/678566956234593126171217 : 29C23812A0A3E502
PRP: Verified (Factored)
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M223061/678566956234593126171217 : 46655973F780BD99
PRP: Verified (Factored)
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M223061/678566956234593126171217 : 46655973F780BD99
PRP: Verified (Factored)
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M223061/678566956234593126171217 : 46655973F780BD99
PRP without proof (not generated)
2009-04-23Sturle SundeF-ECM
Factor: 678566956234593126171217
2009-02-11monstNF
no factor from 2^59 to 2^60
2009-01-03Sturle SundeNF
no factor from 2^58 to 2^59