68 124 037 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Details

Composite: proven not-prime with Lucas-Lehmer test

No factors below 2⁷⁵

TF target 2⁷⁴

P-1

B1 =	620000
B2 =	12710000

Status	Date	User	Residue	Shift	Software
Verified	2015-12-25	Kyle Z Schmidt	5F543006F004C78B	38212703	Windows 64-bit,Prime95,v28.5,build 2
Verified	2024-01-24	brode-runner	5F543006F004C78B	29250232	Linux 64-bit,Prime95,v29.8,build 3

History

Date	User	Type	Result
2024-01-24	brode-runner	C-LL	5F543006F004C78B
2015-12-25	Kyle Z Schmidt	C-LL	5F543006F004C78B
2015-11-29	endless_mike	NF	no factor TF: 74-75
2014-07-20	TheJudger	NF-PM1	B1=620000, B2=12710000, E=12
2014-07-14	TheJudger	NF	no factor TF: 73-74
2014-07-14	TheJudger	NF	no factor TF: 72-73
2014-07-02	RichD0	NF	no factor TF: 71-72
2012-07-28	subgenius	NF	no factor TF: 70-71
2012-02-29	nate.anders	NF	no factor TF: 69-70
2010-01-21	subgenius	NF	no factor TF: 68-69
2010-01-18	-anonymous-	NF	no factor TF: 67-68
2010-01-13	barbariz	NF	no factor TF: 66-67
2009-04-13	NoWhereMan	NF	no factor TF: 65-66
2009-04-11	Sturle Sunde	NF	no factor TF: 64-65
2008-12-08	1997rj7	NF	no factor TF: 1-64
2000-09-29	Joss	NF	no factor TF: 1-53