62 843 173 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 =	595000
B2 =	12346250

Status	Date	User	Residue	Shift	Software
Verified	2014-05-29	Kyle Z Schmidt	FBC9008756243D02	53220227	Windows 64-bit,Prime95,v27.9,build 1
Verified	2022-11-04	IC_9	FBC9008756243D02	42702591	Windows 64-bit,Prime95,v30.3,build 6

History

Date	User	Type	Result
2022-11-04	IC_9	C-LL	FBC9008756243D02
2016-02-23	Mark Rose	NF	no factor TF: 59-63
2014-05-29	Kyle Z Schmidt	C-LL	FBC9008756243D02
2013-07-16	Jerry Hallett	NF	no factor TF: 73-74
2013-03-15	Nesowa	NF-PM1	B1=595000, B2=12346250, E=12
2013-02-24	ktony	NF	no factor TF: 72-73
2013-02-24	ktony	NF	no factor TF: 71-72
2013-02-24	ktony	NF	no factor TF: 70-71
2011-12-14	Rixen	NF	no factor TF: 69-70
2009-10-25	Torchwood Institute	NF	no factor TF: 68-69
2009-08-24	Romanyuk	NF	no factor TF: 67-68
2009-08-19	Romanyuk	NF	no factor TF: 66-67
2009-08-18	Sturle Sunde	NF	no factor TF: 65-66
2009-08-16	Bluesox	NF	no factor TF: 64-65
2009-01-31	Wojciech Florek	NF	no factor TF: 63-64
2003-07-13	Gordon Spence	NF	no factor TF: 1-59