64 945 103 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 =	665000
B2 =	15295000

Status	Date	User	Residue	Shift	Software
Verified	2015-04-02	Kyle Z Schmidt	C3CD7D8C9791EFD1	45581242	Windows 64-bit,Prime95,v28.5,build 2
Verified	2023-08-01	XZT	C3CD7D8C9791EFD1	50195015	Windows 64-bit,Prime95,v30.8,build 17

History

Date	User	Type	Result
2023-08-01	XZT	C-LL	C3CD7D8C9791EFD1
2022-09-29	La Güira	NF	no factor TF: 74-75
2016-02-23	Mark Rose	NF	no factor TF: 60-63
2015-04-02	Kyle Z Schmidt	C-LL	C3CD7D8C9791EFD1
2014-01-22	owftheevil	NF-PM1	B1=665000, B2=15295000, E=6
2014-01-22	owftheevil	NF	no factor TF: 72-74
2013-11-20	Mark Rose	NF	no factor TF: 71-72
2012-09-13	Bold_Seeker	NF	no factor TF: 70-71
2012-01-12	rkz	NF	no factor TF: 69-70
2010-01-30	Sturle Sunde	NF	no factor TF: 68-69
2009-03-22	ewiesmann	NF	no factor TF: 67-68
2009-03-21	Roland S	NF	no factor TF: 66-67
2009-03-15	kkitzhaber	NF	no factor TF: 65-66
2009-03-14	ctenzer	NF	no factor TF: 64-65
2009-03-13	greensinoz	NF	no factor TF: 63-64
2004-02-14	AxelFox	NF	no factor TF: 1-60
2003-10-08	Gordon Spence	NF	no factor TF: 1-59