65 421 001 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 2⁷⁶

TF target 2⁷⁴

P-1

B1 =	630000
B2 =	13387500

Status	Date	User	Residue	Shift	Software
Verified	2014-12-28	Kyle Z Schmidt	C51E87CAAB2834B4	31375946	Windows 64-bit,Prime95,v28.5,build 2
Verified	2022-06-15	Kurt	C51E87CAAB2834B4	58527553	Windows 64-bit,Prime95,v30.7,build 9

History

Date	User	Type	Result
2022-06-15	Kurt	C-LL	C51E87CAAB2834B4
2020-06-01	-anonymous-	NF	no factor TF: 75-76
2019-10-16	Jon Pace	NF	no factor TF: 74-75
2016-03-28	Mark Rose	NF	no factor TF: 60-63
2014-12-28	Kyle Z Schmidt	C-LL	C51E87CAAB2834B4
2013-12-29	gcardona	NF	no factor TF: 73-74
2013-12-22	TheJudger	NF-PM1	B1=630000, B2=13387500, E=12
2013-12-15	Axelsson	NF	no factor TF: 72-73
2013-12-15	Axelsson	NF	no factor TF: 71-72
2012-06-20	-anonymous-	NF	no factor TF: 70-71
2012-01-25	eon_blue_apocalypse	NF	no factor TF: 69-70
2010-06-03	sunithaya	NF	no factor TF: 68-69
2010-05-30	sunithaya	NF	no factor TF: 67-68
2010-05-26	sunithaya	NF	no factor TF: 66-67
2009-11-15	Perendie	NF	no factor TF: 65-66
2009-11-10	joy	NF	no factor TF: 64-65
2009-01-11	Wojciech Florek	NF	no factor TF: 63-64
2004-05-11	1997rj7	NF	no factor TF: 1-60
2003-11-08	Gordon Spence	NF	no factor TF: 1-59