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
5210197Factored
FactorDigitsBitsDate
31261183824.9old
156201706071133.92008-09-08 01:29:06
1260346654311236.92008-09-08 01:29:06
1282123828620799422397192476.82021-08-14 06:14:08
ECM
DigitsB1Curves
255000022 / 280
Estimated T-Level: 20.4 ⓘ
TF below 2^63 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified (Factored)2017-11-24Oliver KruseCDAF1DE84284BAC13112122653
Verified (Factored)2018-01-22kkmrkkblmbrbkCDAF1DE84284BAC1349186853
Verified2021-08-15happy5214CDAF1DE84284BAC14402995253
Verified2021-08-15/r/countingCDAF1DE84284BAC14142989653
History
DateUserTypeResult
2021-08-15captainStickyCERT
PRP Certification
Proof certified good
2021-08-15/r/countingC-PRP
M5210197/31261183/15620170607/126034665431/128212382862079942239719 : CDAF1DE84284BAC1
PRP proof power = 7
PRP: Verified
Proof certified good
2021-08-15boincPlayerCERT
PRP Certification
Proof certified good
2021-08-15happy5214C-PRP
M5210197/31261183/15620170607/126034665431/128212382862079942239719 : CDAF1DE84284BAC1
PRP proof power = 7
PRP: Verified
Proof certified good
2021-08-14happy5214F-PP1
Start=2/7, B1=1250000, B2=85000000, Factor: 128212382862079942239719
2021-08-14happy5214NF-PM1
B1=2500000, B2=240000000
2018-01-22kkmrkkblmbrbkC-PRP
M5210197/31261183/15620170607/126034665431 : CDAF1DE84284BAC1
PRP: Verified (Factored)
PRP without proof (not generated)
2017-11-24Oliver KruseC-PRP
M5210197/31261183/15620170607/126034665431 : CDAF1DE84284BAC1
PRP: Verified (Factored)
PRP without proof (not generated)
2008-09-08Will EdgingtonF
Factor: 126034665431
2008-09-08Will EdgingtonF
Factor: 15620170607