63 371 311 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 =	605000
B2 =	12705000

Status	Date	User	Residue	Shift	Software
Verified	2014-08-10	Kyle Z Schmidt	5DA6A1BCDFAD4D18	38319507	Windows 64-bit,Prime95,v27.9,build 1
Verified	2022-05-16	Tom Kayser	5DA6A1BCDFAD4D18	33289047	Linux 64-bit,Prime95,v29.8,build 6

History

Date	User	Type	Result
2022-05-16	Tom Kayser	C-LL	5DA6A1BCDFAD4D18
2016-02-23	Mark Rose	NF	no factor TF: 59-63
2014-08-10	Kyle Z Schmidt	C-LL	5DA6A1BCDFAD4D18
2013-11-03	kdgehman	NF	no factor TF: 73-74
2013-09-09	TheJudger	NF-PM1	B1=605000, B2=12705000, E=12
2013-06-01	TheJudger	NF	no factor TF: 72-73
2013-06-01	TheJudger	NF	no factor TF: 71-72
2012-09-04	Torchwood Institute	NF	no factor TF: 70-71
2012-09-04	Torchwood Institute	NF	no factor TF: 69-70
2009-08-30	Sturle Sunde	NF	no factor TF: 68-69
2009-08-28	unconnected	NF	no factor TF: 67-68
2009-03-01	JamesV	NF	no factor TF: 66-67
2009-02-27	JamesV	NF	no factor TF: 65-66
2009-02-26	glennpat	NF	no factor TF: 64-65
2009-02-21	Wojciech Florek	NF	no factor TF: 63-64
2003-07-30	Gordon Spence	NF	no factor TF: 1-59
1999-11-17	-anonymous-	NF	no factor TF: 1-50