Marin Mersenne 2^P-1
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Finding World Record Primes Since 1996

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Exponent Range:










MnStatusDetails
41627Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
220789609927.7old
18126474133867427691960.72009-04-22 01:34:30
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000001001 / 4588
Estimated T-Level: 36.1
TF below 2^115 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver KruseDB5B6DBE6A3D8FB32013
Verified2017-09-21Oliver KruseDB5B6DBE6A3D8FB32013
Verified2017-11-06kkmrkkblmbrbkDB5B6DBE6A3D8FB323506913
Verified2020-04-17Oliver KruseD94636E8DB21A8D422915753
Verified2024-07-01kkmrkkblmbrbkD94636E8DB21A8D423503253
History
DateUserTypeResult
2025-08-11masserNF-PM1
B1=8200000000, B2=2984996274610350
2024-07-01kkmrkkblmbrbkC-PRP
M41627/1812647413386742769/220789609 : D94636E8DB21A8D4
PRP: Verified
PRP without proof (small exponent)
2023-04-09JacobZNF-PM1
B1=870000000, B2=681726270675450
2021-04-28gLaussNF-PP1
Start=2/7, B1=10000000, B2=1000000000
2020-04-17Oliver KruseC-PRP
M41627/220789609/1812647413386742769 : D94636E8DB21A8D4
PRP: Verified
PRP without proof (small exponent)
2017-11-06kkmrkkblmbrbkC-PRP
M41627/220789609/1812647413386742769 : DB5B6DBE6A3D8FB3
PRP: Verified
PRP without proof (small exponent)
2017-09-21Oliver KruseC-PRP
M41627/220789609/1812647413386742769 : DB5B6DBE6A3D8FB3
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M41627/220789609/1812647413386742769 : DB5B6DBE6A3D8FB3
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M41627/220789609/1812647413386742769 : DB5B6DBE6A3D8FB3
PRP without proof (not generated)
2016-09-13kkmrkkblmbrbkNF-PM1
B1=100000000, B2=2000000000, E=12
2009-04-22Matthias WurtingerF-ECM
Factor: 1812647413386742769