64 996 121 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 2⁷⁵

TF target 2⁷⁴

P-1

B1 =	665000
B2 =	15461250

Status	Date	User	Residue	Shift	Software
Verified	2014-11-28	Kyle Z Schmidt	A451A1F5D78E152F	20402412	Windows 64-bit,Prime95,v28.5,build 2
Verified	2022-07-23	Jake the Rapper	A451A1F5D78E152F	19782873	Linux 64-bit,Prime95,v30.8,build 15

History

Date	User	Type	Result
2024-06-12	LaurV	NF	no factor TF: 70-71
2022-07-23	Jake the Rapper	C-LL	A451A1F5D78E152F
2022-07-06	Richard Thomas	NF	no factor TF: 74-75
2016-02-23	Mark Rose	NF	no factor TF: 60-63
2014-11-28	Kyle Z Schmidt	C-LL	A451A1F5D78E152F
2014-01-08	ktony	NF	no factor TF: 73-74
2014-01-08	ktony	NF	no factor TF: 72-73
2013-12-12	america64	NF-PM1	B1=665000, B2=15461250, E=12
2013-11-21	Mark Rose	NF	no factor TF: 71-72
2013-02-26	Architects Cubed	NF	no factor TF: 70-71
2012-01-17	Christopher Tompkins	NF	no factor TF: 69-70
2009-10-07	willmore	NF	no factor TF: 68-69
2009-10-03	willmore	NF	no factor TF: 67-68
2009-09-30	willmore	NF	no factor TF: 66-67
2009-03-20	camel	NF	no factor TF: 65-66
2009-03-16	glennpat	NF	no factor TF: 64-65
2009-03-15	-anonymous-	NF	no factor TF: 63-64
2004-02-14	AxelFox	NF	no factor TF: 1-60
2003-10-08	Gordon Spence	NF	no factor TF: 1-59