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
3708841Factored
FactorDigitsBitsDate
179994207631931444.0old
421180896764297828632065.22018-07-18 10:23:40
ECM
DigitsB1Curves
25500003 / 280
Estimated T-Level: 20.1
TF below 2^62 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-09-20kkmrkkblmbrbk8037F015BE839ED71013
Verified (Factored)2017-11-30Oliver Kruse8037F015BE839ED71272845513
Verified2018-07-24_p95holder_A38BE465775081D42124510353
Verified2018-07-24ATHA38BE465775081D42277069353
History
DateUserTypeResult
2022-09-09JossNF-PM1
B1=1000000, B2=212677920
2022-06-16LordJuliusNF
no factor from 2^66 to 2^67
2022-03-28JossNF-PM1
B1=1000000, B2=147585900
2022-03-18JossNF
no factor from 2^67 to 2^68
2018-07-24ATHC-PRP
M3708841/17999420763193/42118089676429782863 : A38BE465775081D4
PRP: Verified
PRP without proof (not generated)
2018-07-24_p95holder_C-PRP
M3708841/17999420763193/42118089676429782863 : A38BE465775081D4
PRP: Verified
PRP without proof (not generated)
2018-07-18TJAOIF
Factor: 42118089676429782863 / TF: 65-66
2017-11-30Oliver KruseC-PRP
M3708841/17999420763193 : 8037F015BE839ED7
PRP: Verified
PRP without proof (not generated)
2017-09-20kkmrkkblmbrbkC-PRP
M3708841/17999420763193 : 8037F015BE839ED7
PRP: Verified
PRP without proof (not generated)