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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
3331331Factored
FactorDigitsBitsDate
26650649824.7old
13074054007360796206012270.12021-01-26 22:21:01
ECM
DigitsB1Curves
255000074 / 280
Estimated T-Level: 21.3
TF below 2^66 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-11-04Oliver KruseB786DF1732AE73431205694553
Verified (Factored)2017-12-15kkmrkkblmbrbkB786DF1732AE7343190399153
Verified2021-01-26gLaussB786DF1732AE7343213321453
Verified2021-01-27MarkSB786DF1732AE7343284781453
P-1 factors
DateFactorB1B2
2021-01-261307405400736079620601100000071000000
History
DateUserTypeResult
2022-09-06JossNF-PM1
B1=1110443, B2=226749600
2022-01-24JossNF-PM1
B1=1110443, B2=119912100
2021-03-30JossNF
no factor from 2^67 to 2^68
2021-02-14JossNF-PM1
B1=333133, B2=3664464, E=6
2021-01-28curtiscCERT
PRP Certification
Proof certified good
2021-01-27arachnotronCERT
PRP Certification
Proof certified good
2021-01-27MarkSC-PRP
M3331331/26650649/1307405400736079620601 : B786DF1732AE7343
PRP proof power = 7
PRP: Verified
Proof certified good
2021-01-26gLaussC-PRP
M3331331/26650649/1307405400736079620601 : B786DF1732AE7343
PRP proof power = 7
PRP: Verified
Proof certified good
2021-01-26gLaussF-PM1
Factor: 1307405400736079620601 / (P-1, B1=1000000, B2=71000000)
2021-01-19JossNF-PM1
B1=333133
2017-12-15kkmrkkblmbrbkC-PRP
M3331331/26650649 : B786DF1732AE7343
PRP: Verified (Factored)
PRP without proof (not generated)
2017-11-04Oliver KruseC-PRP
M3331331/26650649 : B786DF1732AE7343
PRP: Verified (Factored)
PRP without proof (not generated)