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
220613Factored
FactorDigitsBitsDate
27742057716340976588455224738424192136117.72017-01-26 15:38:11
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000205 / 1566
Estimated T-Level: 30.7
TF below 2^97 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Unknown4FD20
Verified (Factored)Tom CattrallEA562C6267C24FD20
Verified (Factored)Brian J. BeesleyEA562C6267C24FD20
Verified (Factored)Eivind TrielEA562C6267C24FD25697
Verified (Factored)2016-06-01MadPooEA562C6267C24FD2169035
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-22Oliver Kruse0307E7544E62DDE21013
Verified2017-10-12kkmrkkblmbrbk0307E7544E62DDE2111084313
Verified2020-04-17Oliver Kruse26BB23DAB229386413699853
Verified2024-02-03Wentao Huang26BB23DAB2293864119415153
P-1 factors
DateFactorB1B2
2017-01-262774205771634097658845522473842419211000000000
History
DateUserTypeResult
2024-02-03slaurCERT
PRP Certification
Proof certified good
2024-02-03Wentao HuangC-PRP
M220613/277420577163409765884552247384241921 : 26BB23DAB2293864
PRP proof power = 5
PRP: Verified
Proof certified good
2022-03-07LordJuliusNF
no factor from 2^54 to 2^55
2020-04-17Oliver KruseC-PRP
M220613/277420577163409765884552247384241921 : 26BB23DAB2293864
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M220613/277420577163409765884552247384241921 : 0307E7544E62DDE2
PRP: Verified
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M220613/277420577163409765884552247384241921 : 0307E7544E62DDE2
PRP: Verified
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M220613/277420577163409765884552247384241921 : 0307E7544E62DDE2
PRP without proof (not generated)
2017-01-26kkmrkkblmbrbkF-PM1
Factor: 277420577163409765884552247384241921 / (P-1, B1=100000000)
2016-09-06JossNF-PM1
B1=20000000, B2=800000000, E=12
2016-09-02JossNF-PM1
B1=20000000, B2=400000000, E=12
2016-06-01MadPooC-LL
EA562C6267C24FD2
2016-02-23Mark RoseNF
no factor from 2^57 to 2^58
2016-01-23Gordon SpenceNF
no factor from 2^63 to 2^64
2016-01-23Gordon SpenceNF
no factor from 2^62 to 2^63
2015-06-29snme2pm1NF
no factor from 2^61 to 2^62
2013-07-23lycornNF
no factor from 2^60 to 2^61
2013-06-27BloodIceNF-PM1
B1=20000000, B2=200000000, E=12
2012-05-29JossNF-PM1
B1=7072926
2011-01-29JossNF-PM1
B1=5000000
2009-01-30Sturle SundeNF
no factor from 2^59 to 2^60
2009-01-01Sturle SundeNF
no factor from 2^58 to 2^59