63 575 377 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	2013-11-10	Kyle Z Schmidt	686916C431E35F81	1625464	Windows 64-bit,Prime95,v27.9,build 1
Verified	2023-02-19	-anonymous-	686916C431E35F81	47321963	Windows 64-bit,Prime95,v29.8,build 6

History

Date	User	Type	Result
2023-02-19	-anonymous-	C-LL	686916C431E35F81
2022-12-06	aup	NF	no factor TF: 74-75
2016-02-23	Mark Rose	NF	no factor TF: 59-63
2013-11-10	Kyle Z Schmidt	C-LL	686916C431E35F81
2013-10-05	owftheevil	NF-PM1	B1=570000, B2=11257500, E=6
2013-09-23	GrunwalderGIMP	NF	no factor TF: 73-74
2013-06-12	TheJudger	NF	no factor TF: 72-73
2013-06-12	TheJudger	NF	no factor TF: 71-72
2012-06-05	Simon Harrison	NF	no factor TF: 70-71
2011-12-27	therealwebs	NF	no factor TF: 69-70
2009-12-23	Perendie	NF	no factor TF: 68-69
2009-12-17	-anonymous-	NF	no factor TF: 67-68
2009-12-05	-anonymous-	NF	no factor TF: 66-67
2009-11-27	-anonymous-	NF	no factor TF: 65-66
2009-09-11	Manfred Bichler	NF	no factor TF: 64-65
2009-02-23	Wojciech Florek	NF	no factor TF: 63-64
2003-08-25	Gordon Spence	NF	no factor TF: 1-59