Marin Mersenne 2^P-1
Username
Password
Forgot password?
White
Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:





MnDetails
16673
Composite: proven not-prime with Lucas-Lehmer test
No factors below 266
TF target 244
P-1
B1 = 1000000000000
B2 = 1402034650733706990
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
504400000016550 / 16550
551100000007026 / 40830
Estimated T-Level: 50.9 ⓘ
TF below 2^164 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShiftSoftware
VerifiedUnknown7D140Unknown,(aka U)
VerifiedGeorge Woltman344C3EEB58A27D140Woltman,Prime95,first web release,(aka W4)
VerifiedBrian J. Beesley344C3EEB58A27D140Mac,John Sweeney,v1.4,(aka J3)
Verified2015-04-11MadPoo 🙂344C3EEB58A27D1415423Windows 64-bit,Prime95,v26,(aka We4)
History
DateUserTypeResult
2023-10-23-anonymous-NF-PM1B1=1000000000000, B2=1402034650733706990
2023-08-26masserNF-PP1Start=6/5, B1=460000000, B2=82340000000
2023-07-08masserNF-PP1Start=126/61, B1=460000000, B2=18400000000
2022-04-23-anonymous-NF-PM1B1=100000000000, B2=100386248301759420
2022-01-20Ruslan BorisovNFno factor TF: 65-66
2021-05-11ATHNF-PP1Start=2/7, B1=1000000000, B2=241000000000
2021-02-11Ruslan BorisovNFno factor TF: 64-65
2019-05-20alexNF-PM1B1=10000000000, B2=500000000000, E=12
2018-10-29snme2pm1NFno factor TF: 63-64
2016-12-22James HintzNF-PM1B1=1935580273, B2=120005976926, E=12
2016-06-23Sid & AndyNFno factor TF: 62-63
2016-05-05JossNF-PM1B1=982360150, B2=49118007500, E=12
2016-02-23LaurVNFno factor TF: 59-60
2016-02-23LaurVNFno factor TF: 58-59
2016-02-23LaurVNFno factor TF: 57-58
2015-08-31snme2pm1NFno factor TF: 61-62
2015-04-11MadPoo 🙂C-LL344C3EEB58A27D14
2012-12-25bcp19NFno factor TF: 60-61
2012-10-12JossNF-PM1B1=491180075, B2=49118007500, E=12
2010-03-17GrunwalderGIMPNFno factor TF: 1-60
2003-09-29-anonymous-NF-PM1B1=16777216, B2=1677721600, E=12
2003-09-29-anonymous-NF-PM1B1=8388608, B2=838860800, E=12
2003-07-06-anonymous-NF-PM1B1=4194304, B2=419430400, E=12
2003-05-19-anonymous-NF-PM1B1=2097152, B2=209715200, E=12
2003-04-27-anonymous-NF-PM1B1=1048576, B2=104857600, E=48
2003-04-03-anonymous-NF-PM1B1=524288, B2=52428800, E=48
2003-03-27-anonymous-NF-PM1B1=262144, B2=26214400, E=30
2003-02-02-anonymous-NF-PM1B1=131072, B2=13107200, E=30
2002-10-12-anonymous-NFno factor TF: 1-57
2002-07-14-anonymous-NF-PM1B1=65536, B2=6553600, E=12
2002-06-09-anonymous-NF-PM1B1=32768, B2=3276800
2002-04-28-anonymous-NF-PM1B1=16384, B2=1638400
2001-08-18Alex KruppaNF-PM1B1=1000000, B2=100000000
2001-07-29Alex KruppaNF-PM1B1=1000000, B2=100000000
2001-04-29-anonymous-NF-PM1B1=100000, B2=10000000
2000-09-23-anonymous-NFno factor TF: 1-56
2000-03-08-anonymous-NFno factor TF: 53-54
1999-09-22-anonymous-NFno factor TF: 52-53