59 234 221 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 2⁷³

P-1

B1 =	555000
B2 =	11100000

Status	Date	User	Residue	Shift	Software
Verified	2013-07-17	ANONYMOUS	E563A425D86C8EFC	53072077	Linux 64-bit,Prime95,v27.9,build 1
Verified	2020-11-26	Dubslow	E563A425D86C8EFC	45930990	Linux 64-bit,Prime95,v29.8,build 6

History

Date	User	Type	Result
2020-11-26	Dubslow	C-LL	E563A425D86C8EFC
2018-12-28	-anonymous-	NF	no factor TF: 73-74
2016-02-23	Mark Rose	NF	no factor TF: 58-63
2013-07-17	ANONYMOUS	C-LL	E563A425D86C8EFC
2012-12-21	mgpainter	NF-PM1	B1=555000, B2=11100000, E=6
2012-08-14	James Heinrich	NF	no factor TF: 71-73
2011-11-08	Luigi Morelli	NF	no factor TF: 70-71
2011-07-23	megavink	NF	no factor TF: 69-70
2009-12-09	Marzbug	NF	no factor TF: 68-69
2008-11-16	James Heinrich	NF	no factor TF: 67-68
2008-11-14	James Heinrich	NF	no factor TF: 66-67
2008-11-12	James Heinrich	NF	no factor TF: 65-66
2008-11-10	James Heinrich	NF	no factor TF: 64-65
2008-06-26	monst	NF	no factor TF: 63-64
2001-11-17	-anonymous-	NF	no factor TF: 1-58
2001-02-18	-anonymous-	NF	no factor TF: 1-57
2000-03-28	-anonymous-	NF	no factor TF: 1-56
2000-02-09	-anonymous-	NF	no factor TF: 1-54