Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
193873Factored
FactorDigitsBitsDate
5816191722.5old
8147516702471239.62008-07-27 10:50:03
2153076945291832811857.62014-07-28 14:53:29
605402963796010777931446732685.62019-05-23 10:49:35
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000160 / 1566
Estimated T-Level: 30.5
TF below 2^96 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-09-22Oliver KruseC1768EE57355A6273013
Verified (Factored)2017-10-12kkmrkkblmbrbkC1768EE57355A62739318613
Verified (Factored)2019-05-23Yaroslav Berezhko0CFAFD36695C7268311030353
Verified2019-05-23Yaroslav Berezhko0CFAFD36695C7268415881753
Verified2023-08-24USAFSS0CFAFD36695C7268416829853
History
DateUserTypeResult
2023-08-24LOBESCERT
PRP Certification
Proof certified good
2023-08-24USAFSSC-PRP
M193873/5816191/814751670247/215307694529183281/60540296379601077793144673 : 0CFAFD36695C7268
PRP proof power = 5
PRP: Verified
Proof certified good
2021-07-11ATHNF-PP1
Start=2/7, B1=15000000, B2=1500000000
2019-05-23Yaroslav BerezhkoC-PRP
M193873/5816191/814751670247/215307694529183281/60540296379601077793144673 : 0CFAFD36695C7268
PRP: Verified
PRP without proof (small exponent)
2019-05-23Yaroslav BerezhkoF-PP1
Start=3/3, B1=10000000, Factor: 60540296379601077793144673
2019-05-23Yaroslav BerezhkoC-PRP
M193873/5816191/814751670247/215307694529183281 : 0CFAFD36695C7268
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M193873/5816191/814751670247/215307694529183281 : C1768EE57355A627
PRP: Verified
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M193873/5816191/814751670247/215307694529183281 : C1768EE57355A627
PRP: Verified
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M193873/5816191/814751670247/215307694529183281 : C1768EE57355A627
PRP without proof (not generated)
2017-08-23kkmrkkblmbrbkNF-PM1
B1=100000000, B2=2000000000, E=12
2014-07-28TJAOIF-ECM
Factor: 215307694529183281
2008-07-27J FeitsmaF
Factor: 814751670247