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
6203Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
148873617.2old
1014008800492773105192166.5old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000004935 / 9201
Estimated T-Level: 42.7
TF below 2^137 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver Kruse7ABA612CF86F6D952013
Verified2017-10-12kkmrkkblmbrbk7ABA612CF86F6D952208513
Verified2020-04-17Oliver Kruse738669CBF31CECAC2171653
Verified2024-02-03Wentao Huang738669CBF31CECAC2333353
Assigned
AssignedUserWork TypeStage% DoneUpdatedExpired
2024-10-21Denial140factor ECM small0.00 % 2024-10-24
2024-10-21Denial140factor ECM small0.00 % 2024-10-24
2024-10-21Denial140factor ECM small0.00 % 2024-10-24
2024-10-21Denial140factor ECM small0.00 % 2024-10-24
2024-10-21Denial140factor ECM small0.00 % 2024-10-24
2024-10-21Denial140factor ECM small0.00 % 2024-10-24
History
DateUserTypeResult
2024-02-03Wentao HuangC-PRP
M6203/148873/101400880049277310519 : 738669CBF31CECAC
PRP: Verified
PRP without proof (small exponent)
2023-07-31-Anonymous-NF-PM1
B1=40000000000, B2=169615672618692300
2021-07-10ViliamFNF-PM1
B1=1000000000, B2=201000000000
2020-04-17Oliver KruseC-PRP
M6203/148873/101400880049277310519 : 738669CBF31CECAC
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M6203/148873/101400880049277310519 : 7ABA612CF86F6D95
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M6203/148873/101400880049277310519 : 7ABA612CF86F6D95
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M6203/148873/101400880049277310519 : 7ABA612CF86F6D95
PRP without proof (not generated)