62 676 989 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 =	585000
B2 =	15063750

Status	Date	User	Residue	Shift	Software
Verified	2014-01-29	Kyle Z Schmidt	1C660DCCE02D7351	28220092	Windows 64-bit,Prime95,v27.9,build 1
Verified	2022-10-13	lajo321	1C660DCCE02D7351	22810083	Linux 64-bit,Prime95,v29.4,build 8

History

Date	User	Type	Result
2022-10-13	lajo321	C-LL	1C660DCCE02D7351
2016-02-23	Mark Rose	NF	no factor TF: 59-63
2014-01-29	Kyle Z Schmidt	C-LL	1C660DCCE02D7351
2013-07-21	Greg	NF-PM1	B1=585000, B2=15063750, E=6
2013-07-16	Chuck	NF	no factor TF: 73-74
2013-03-24	megavink	NF	no factor TF: 72-73
2013-03-24	megavink	NF	no factor TF: 71-72
2012-09-17	jondi_hanluc	NF	no factor TF: 70-71
2011-12-08	Mikael Lavoie	NF	no factor TF: 69-70
2009-09-27	tmorrow	NF	no factor TF: 68-69
2009-09-24	tmorrow	NF	no factor TF: 67-68
2009-09-21	tmorrow	NF	no factor TF: 66-67
2009-09-18	Marv	NF	no factor TF: 65-66
2009-09-10	riccardo uberti	NF	no factor TF: 64-65
2009-02-01	Wojciech Florek	NF	no factor TF: 63-64
2003-07-13	Gordon Spence	NF	no factor TF: 1-59