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
2012123Factored
FactorDigitsBitsDate
479529153371135.5old
51446508917249641271962.22016-01-21 22:50:02
24313365657522413030650012581.02022-04-16 18:32:12
ECM
DigitsB1Curves
2550000280 / 280
30250000117 / 640
Estimated T-Level: 25.9
TF below 2^81 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-09-30alpertron1925F3C4993663C42013
Verified (Factored)2017-10-20Oliver Kruse1925F3C4993663C42200067813
Verified2022-04-18_p95holder_F0E3973808407CB73168947253
Verified2022-04-24XZTF0E3973808407CB73107520353
P-1 factors
DateFactorB1B2
2016-01-21514465089172496412750000015000000
History
DateUserTypeResult
2022-04-24lajo321CERT
PRP Certification
Proof certified good
2022-04-24XZTC-PRP
M2012123/47952915337/5144650891724964127/2431336565752241303065001 : F0E3973808407CB7
PRP proof power = 7
PRP: Verified
Proof certified good
2022-04-18_p95holder_C-PRP
M2012123/47952915337/5144650891724964127/2431336565752241303065001 : F0E3973808407CB7
PRP: Verified
PRP without proof (not generated)
2022-04-16_p95holder_F-ECM
Factor: 2431336565752241303065001 / (ECM curve 4, B1=50000, B2=5000000)
2017-10-20Oliver KruseC-PRP
M2012123/47952915337/5144650891724964127 : 1925F3C4993663C4
PRP: Verified
PRP without proof (not generated)
2017-09-30alpertronC-PRP
M2012123/47952915337/5144650891724964127 : 1925F3C4993663C4
PRP: Verified
PRP without proof (not generated)
2016-01-21alpertronF-PM1
Factor: 5144650891724964127 / (P-1, B1=500000, B2=15000000, E=12)