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
71933Factored
FactorDigitsBitsDate
9331862062105383761992169.72010-04-26 03:10:09
2093095945484666008008972477.5old
12316488358939357099019272580.02016-11-18 13:12:41
1994009651869743629868718842073097.32017-01-21 16:10:04
397384904120725220836259675759465547507140131.52017-01-22 05:20:56
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001265 / 1566
Estimated T-Level: 34.0 ⓘ
TF below 2^108 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-09-20kkmrkkblmbrbk78B80920CD2337E25013
Verified2017-10-02kkmrkkblmbrbk78B80920CD2337E25013
Verified2017-11-06ATH78B80920CD2337E25543013
Verified2020-04-17Oliver KruseB4189CB33B092DA456297953
Verified2024-02-03Wentao HuangB4189CB33B092DA452537753
P-1 factors
DateFactorB1B2
2017-01-22397384904120725220836259675759465547507110000000012720901946406
History
DateUserTypeResult
2024-02-03Wentao HuangC-PRP
M71933/209309594548466600800897/933186206210538376199/1231648835893935709901927/199400965186974362986871884207/3973849041207252208362596757594655475071 : B4189CB33B092DA4
PRP: Verified
PRP without proof (small exponent)
2024-02-02masserNF-PP1
Start=135/17, B1=25000000, B2=1775000000
2024-01-31masserNF-PP1
Start=6/5, B1=25000000, B2=1775000000
2024-01-31masserNF-PP1
Start=2/7, B1=25000000, B2=1775000000
2022-04-28George WoltmanNF-PM1
B1=1000000000, B2=95443272064140
2022-04-22George WoltmanNF-PM1
B1=1000000000
2020-04-17Oliver KruseC-PRP
M71933/933186206210538376199/209309594548466600800897/1231648835893935709901927/199400965186974362986871884207/3973849041207252208362596757594655475071 : B4189CB33B092DA4
PRP: Verified
PRP without proof (small exponent)
2017-11-06ATHC-PRP
M71933/933186206210538376199/209309594548466600800897/1231648835893935709901927/199400965186974362986871884207/3973849041207252208362596757594655475071 : 78B80920CD2337E2
PRP: Verified
PRP without proof (small exponent)
2017-10-02kkmrkkblmbrbkC-PRP
M71933/933186206210538376199/209309594548466600800897/1231648835893935709901927/199400965186974362986871884207/3973849041207252208362596757594655475071 : 78B80920CD2337E2
PRP: Verified
PRP without proof (not generated)
2017-09-27csabaC-PRP
M71933/known_factors : 78B80920CD2337E2
PRP without proof (not generated)
2017-09-20kkmrkkblmbrbkC-PRP
M71933/933186206210538376199/209309594548466600800897/1231648835893935709901927/199400965186974362986871884207/3973849041207252208362596757594655475071 : 78B80920CD2337E2
PRP: Verified
PRP without proof (not generated)
2017-01-22kkmrkkblmbrbkF-PM1
Factor: 3973849041207252208362596757594655475071 / (P-1, B1=100000000, B2=12720901946406)
2017-01-21kkmrkkblmbrbkF-ECM
Factor: 199400965186974362986871884207 / (ECM curve 55, B1=250000, B2=25000000)
2016-11-24kkmrkkblmbrbkNF-PM1
B1=100000000, B2=2000000000, E=12
2016-11-18TJAOIF-ECM
Factor: 1231648835893935709901927 / (ECM curve 16, B1=250000, B2=25000000)
2010-04-26James HintzF-ECM
Factor: 933186206210538376199