63 084 709 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 =	555000
B2 =	10128750

Status	Date	User	Residue	Shift	Software
Verified	2013-11-21	curtisc	9EC78E116BE8E04F	36208556	Windows Service,Prime95,v27.9,build 1
Verified	2023-04-04	Schnell Lab	9EC78E116BE8E04F	56049710	Windows 64-bit,Prime95,v30.3,build 6
Verified	2023-06-06	garo	9EC78E116BE8E04F	50642986	Windows 64-bit,Prime95,v30.8,build 15

History

Date	User	Type	Result
2023-06-06	garo	C-LL	9EC78E116BE8E04F
2023-04-04	Schnell Lab	C-LL	9EC78E116BE8E04F
2016-02-23	Mark Rose	NF	no factor TF: 59-63
2013-11-21	curtisc	C-LL	9EC78E116BE8E04F
2013-06-25	HardyP Germany	NF-PM1	B1=555000, B2=10128750
2013-04-20	megavink	NF	no factor TF: 73-74
2013-04-20	megavink	NF	no factor TF: 72-73
2013-04-20	megavink	NF	no factor TF: 71-72
2012-08-17	-anonymous-	NF	no factor TF: 70-71
2011-12-23	benthomas	NF	no factor TF: 69-70
2009-11-08	subgenius	NF	no factor TF: 68-69
2009-11-05	subgenius	NF	no factor TF: 67-68
2009-09-03	lycorn	NF	no factor TF: 66-67
2009-09-01	Dougal	NF	no factor TF: 65-66
2009-02-24	mathschris	NF	no factor TF: 64-65
2009-02-14	Wojciech Florek	NF	no factor TF: 63-64
2003-07-21	Gordon Spence	NF	no factor TF: 1-59
1999-11-17	-anonymous-	NF	no factor TF: 1-51