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
31873Factored
FactorDigitsBitsDate
36289322891031.8old
809892930011136.22008-08-26 19:59:26
89093492912986631653.02008-08-29 02:24:46
131721112258395897307667858000931100.12018-06-04 05:23:59
3648040994081100659010160524378289223338124.82022-11-10 12:29:37
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000001341 / 4588
Estimated T-Level: 36.5
TF below 2^116 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-09-21Oliver Kruse5E375967CC8248D53013
Verified (Factored)2017-10-12kkmrkkblmbrbk5E375967CC8248D531619013
Verified (Factored)2018-06-07Oliver Kruse8D4269969926EF444712753
Verified (Factored)2018-06-08arnaud8D4269969926EF444260953
Verified2022-11-10nordi8D4269969926EF4451133853
P-1 factors
DateFactorB1B2
2022-11-10364804099408110065901016052437828922333000000000912626498753970
History
DateUserTypeResult
2022-11-10nordiC-PRP
M31873/3628932289/80989293001/8909349291298663/1317211122583958973076678580009/36480409940811006590101605243782892233 : 8D4269969926EF44
PRP: Verified
PRP without proof (small exponent)
2022-11-10nordiF-PM1
Factor: 36480409940811006590101605243782892233 / (P-1, B1=3000000000, B2=912626498753970)
2022-09-28nordiNF-PM1
B1=3000000000
2018-06-08arnaudC-PRP
M31873/3628932289/80989293001/8909349291298663/1317211122583958973076678580009 : 8D4269969926EF44
PRP: Verified
PRP without proof (small exponent)
2018-06-07Oliver KruseC-PRP
M31873/3628932289/80989293001/8909349291298663/1317211122583958973076678580009 : 8D4269969926EF44
PRP: Verified
PRP without proof (small exponent)
2018-06-04kkmrkkblmbrbkF-ECM
Factor: 1317211122583958973076678580009 / (ECM curve 196, B1=1000000, B2=100000000)
2017-10-12kkmrkkblmbrbkC-PRP
M31873/3628932289/80989293001/8909349291298663 : 5E375967CC8248D5
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M31873/3628932289/80989293001/8909349291298663 : 5E375967CC8248D5
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M31873/3628932289/80989293001/8909349291298663 : 5E375967CC8248D5
PRP without proof (not generated)
2016-10-08kkmrkkblmbrbkNF-PM1
B1=200000000, B2=5000000000, E=12
2008-08-29-Anonymous-F
Factor: 8909349291298663
2008-08-26-Anonymous-F
Factor: 80989293001