64 137 979 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 2⁷⁴

TF target 2⁷⁴

P-1

B1 =	575000
B2 =	11500000

Status	Date	User	Residue	Shift	Software
Verified	2014-10-03	Kyle Z Schmidt	446FF5A6BD50930D	37036764	Windows 64-bit,Prime95,v27.9,build 1
Verified	2021-12-29	lajo321	446FF5A6BD50930D	42634832	Linux 64-bit,Prime95,v30.7,build 9

History

Date	User	Type	Result
2021-12-29	lajo321	C-LL	446FF5A6BD50930D
2016-02-23	Mark Rose	NF	no factor TF: 60-63
2014-10-03	Kyle Z Schmidt	C-LL	446FF5A6BD50930D
2013-09-15	TheJudger	NF-PM1	B1=575000, B2=11500000, E=12
2013-09-09	TheJudger	NF	no factor TF: 73-74
2013-09-09	TheJudger	NF	no factor TF: 71-72
2013-09-09	TheJudger	NF	no factor TF: 72-73
2012-06-04	ITS	NF	no factor TF: 70-71
2012-02-08	america64	NF	no factor TF: 69-70
2009-11-04	Tommy Boucher	NF	no factor TF: 68-69
2009-11-02	-anonymous-	NF	no factor TF: 67-68
2009-11-01	Sturle Sunde	NF	no factor TF: 66-67
2009-10-30	feynmann	NF	no factor TF: 65-66
2009-05-22	garo	NF	no factor TF: 64-65
2009-05-21	garo	NF	no factor TF: 63-64
2004-01-18	AxelFox	NF	no factor TF: 1-60
2003-08-25	Gordon Spence	NF	no factor TF: 1-59
1999-11-17	-anonymous-	NF	no factor TF: 1-50