65 660 633 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 =	590000
B2 =	11947500

Status	Date	User	Residue	Shift	Software
Verified	2015-01-14	Kyle Z Schmidt	9F5CA42D427E321E	22335586	Windows 64-bit,Prime95,v28.5,build 2
Verified	2022-12-19	Ryan Propper	9F5CA42D427E321E	38639963	Linux 64-bit,Prime95,v30.7,build 9

History

Date	User	Type	Result
2022-12-19	Ryan Propper	C-LL	9F5CA42D427E321E
2022-05-03	MadPoo 🙂	NF	no factor TF: 74-75
2016-03-28	Mark Rose	NF	no factor TF: 60-63
2015-01-14	Kyle Z Schmidt	C-LL	9F5CA42D427E321E
2013-07-09	Judge Hale	NF-PM1	B1=590000, B2=11947500, E=12
2013-05-07	Jerry Hallett	NF	no factor TF: 73-74
2013-05-07	Jerry Hallett	NF	no factor TF: 72-73
2013-03-23	Redarm	NF	no factor TF: 71-72
2013-03-23	Redarm	NF	no factor TF: 69-70
2013-03-23	Redarm	NF	no factor TF: 70-71
2010-02-04	Owner	NF	no factor TF: 68-69
2009-11-12	Gordon Bower	NF	no factor TF: 67-68
2009-11-07	Kingoff Acupuncture	NF	no factor TF: 66-67
2009-11-02	-anonymous-	NF	no factor TF: 65-66
2009-11-01	Sturle Sunde	NF	no factor TF: 64-65
2009-01-20	Wojciech Florek	NF	no factor TF: 63-64
2004-07-02	1997rj7	NF	no factor TF: 1-60
2003-11-16	Gordon Spence	NF	no factor TF: 1-59