63 499 781 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 =	570000
B2 =	11257500

Status	Date	User	Residue	Shift	Software
Verified	2014-08-28	Kyle Z Schmidt	CA661D4CF84B5C43	22090896	Windows 64-bit,Prime95,v27.9,build 1
Verified	2023-01-08	Seth_Tr	CA661D4CF84B5C43	44476288	Linux 64-bit,Prime95,v30.8,build 16

History

Date	User	Type	Result
2023-01-08	Seth_Tr	C-LL	CA661D4CF84B5C43
2022-12-12	aup	NF	no factor TF: 74-75
2016-02-23	Mark Rose	NF	no factor TF: 59-63
2014-08-28	Kyle Z Schmidt	C-LL	CA661D4CF84B5C43
2013-09-15	TheJudger	NF-PM1	B1=570000, B2=11257500, E=6
2013-09-09	Nipal	NF	no factor TF: 73-74
2013-06-12	TheJudger	NF	no factor TF: 71-72
2013-06-12	TheJudger	NF	no factor TF: 72-73
2012-06-10	rick	NF	no factor TF: 70-71
2012-01-03	ITS	NF	no factor TF: 69-70
2009-08-31	unconnected	NF	no factor TF: 68-69
2009-08-29	unconnected	NF	no factor TF: 67-68
2009-03-24	tmorrow	NF	no factor TF: 66-67
2009-03-19	afj	NF	no factor TF: 65-66
2009-03-13	Rael	NF	no factor TF: 64-65
2009-02-23	Wojciech Florek	NF	no factor TF: 63-64
2003-07-30	Gordon Spence	NF	no factor TF: 1-59
1999-11-17	-anonymous-	NF	no factor TF: 1-50