Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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Exponent Range:










MnStatusDetails
91199Factored
FactorDigitsBitsDate
156132689927.2old
51808245143562336221689512450215933108.72019-09-10 20:58:23
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000549 / 1566
Estimated T-Level: 31.8 ⓘ
TF below 2^100 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified (Factored)2017-09-21Oliver KruseC85BA7627091AE661013
Verified (Factored)2017-10-13kkmrkkblmbrbkC85BA7627091AE6613876813
Verified2019-09-11mnd909B47FC16491EB8B22681953
Verified2019-09-11mnd909B47FC16491EB8B26470153
Verified2019-09-14GAN09B47FC16491EB8B23781853
History
DateUserTypeResult
2022-07-09George WoltmanNF-PM1
B1=1000000000, B2=70552596864750
2022-07-03George WoltmanNF-PM1
B1=1000000000
2021-04-28nordiNF-PP1
Start=6/5, B1=40000000, B2=5240000000
2021-04-24nordiNF-PP1
Start=2/7, B1=40000000, B2=5240000000
2019-09-14GANC-PRP
M91199/156132689/518082451435623362216895124502159 : 09B47FC16491EB8B
PRP: Verified
PRP without proof (small exponent)
2019-09-11mnd9C-PRP
M91199/156132689/518082451435623362216895124502159 : 09B47FC16491EB8B
PRP: Verified
PRP without proof (small exponent)
2019-09-11mnd9C-PRP
M91199/156132689/518082451435623362216895124502159 : 09B47FC16491EB8B
PRP: Verified
PRP without proof (small exponent)
2019-09-10Niels_Mache_NextcloudF-ECM
Factor: 518082451435623362216895124502159 / (ECM curve 2, B1=1000000, B2=100000000, Sigma=7332390654436078)
2017-10-13kkmrkkblmbrbkC-PRP
M91199/156132689 : C85BA7627091AE66
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M91199/156132689 : C85BA7627091AE66
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M91199/156132689 : C85BA7627091AE66
PRP without proof (not generated)
2016-12-12kkmrkkblmbrbkNF-PM1
B1=100000000, B2=2000000000, E=12