62 289 691 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 =	11407500

Status	Date	User	Residue	Shift	Software
Verified	2014-03-31	Kyle Z Schmidt	3528400197E2F59F	60554627	Windows 64-bit,Prime95,v27.9,build 1
Verified	2021-12-20	kdelisle2005	3528400197E2F59F	46797295	Windows 64-bit,Prime95,v30.3,build 6

History

Date	User	Type	Result
2021-12-20	kdelisle2005	C-LL	3528400197E2F59F
2016-02-23	Mark Rose	NF	no factor TF: 59-63
2014-03-31	Kyle Z Schmidt	C-LL	3528400197E2F59F
2013-07-20	Bdot	NF	no factor TF: 73-74
2013-03-30	ixfd64	NF-PM1	B1=585000, B2=11407500
2013-03-17	TheJudger	NF	no factor TF: 72-73
2013-03-12	Konrad S.	NF	no factor TF: 71-72
2012-09-05	]mh[ Virtek	NF	no factor TF: 70-71
2011-12-03	symallad	NF	no factor TF: 69-70
2009-07-30	Sturle Sunde	NF	no factor TF: 68-69
2009-03-14	cawgod	NF	no factor TF: 67-68
2009-03-12	cawgod	NF	no factor TF: 66-67
2009-03-11	cawgod	NF	no factor TF: 65-66
2009-03-10	cawgod	NF	no factor TF: 64-65
2008-12-20	Derek	NF	no factor TF: 63-64
2003-07-06	Gordon Spence	NF	no factor TF: 1-59
2003-06-30	Gordon Spence	NF	no factor TF: 1-59