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
194443Factored
FactorDigitsBitsDate
20610959824.3old
211082630423503735222881051132994.12021-01-24 07:48:31
ECM
DigitsB1Curves
2550000280 / 280
30250000634 / 640
Estimated T-Level: 30.0 ⓘ
TF below 2^95 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified (Factored)2017-09-22Oliver Kruse1763D53498C3D6381013
Verified (Factored)2017-10-12kkmrkkblmbrbk1763D53498C3D63818094913
Verified (Factored)2020-04-17Oliver KruseC7FEDD9184EE8B63118546853
Verified2021-01-24ViliamFC7FEDD9184EE8B63212255453
Verified2023-08-24USAFSSC7FEDD9184EE8B6321186653
History
DateUserTypeResult
2023-08-24Mikhail IvanovCERT
PRP Certification
Proof certified good
2023-08-24USAFSSC-PRP
M194443/20610959/21108263042350373522288105113 : C7FEDD9184EE8B63
PRP proof power = 5
PRP: Verified
Proof certified good
2021-01-24curtiscCERT
PRP Certification
Proof certified good
2021-01-24ViliamFC-PRP
M194443/20610959/21108263042350373522288105113 : C7FEDD9184EE8B63
PRP proof power = 5
PRP: Verified
Proof certified good
2021-01-24nordiF-ECM
Factor: 21108263042350373522288105113 / (ECM curve 4, B1=250000, B2=38500000, Sigma=4298875211952480)
2020-04-17Oliver KruseC-PRP
M194443/20610959 : C7FEDD9184EE8B63
PRP: Verified (Factored)
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M194443/20610959 : 1763D53498C3D638
PRP: Verified (Factored)
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M194443/20610959 : 1763D53498C3D638
PRP: Verified (Factored)
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M194443/20610959 : 1763D53498C3D638
PRP without proof (not generated)
2017-09-02kkmrkkblmbrbkNF-PM1
B1=100000000, B2=2000000000, E=12