63 062 071 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 =	565000
B2 =	11017500

Status	Date	User	Residue	Shift	Software
Verified	2014-06-18	Kyle Z Schmidt	B95F7274DA2F87BE	16301512	Windows 64-bit,Prime95,v27.9,build 1
Verified	2023-02-15	antkh	B95F7274DA2F87BE	4581147	Windows,Prime95,v25.11,build 2

History

Date	User	Type	Result
2024-05-31	LaurV	NF	no factor TF: 70-71
2023-02-15	antkh	C-LL	B95F7274DA2F87BE
2016-02-23	Mark Rose	NF	no factor TF: 59-63
2014-06-18	Kyle Z Schmidt	C-LL	B95F7274DA2F87BE
2013-06-09	TheJudger	NF-PM1	B1=565000, B2=11017500, E=6
2013-04-18	Bdot	NF	no factor TF: 73-74
2013-04-17	Bdot	NF	no factor TF: 72-73
2013-04-17	Bdot	NF	no factor TF: 71-72
2013-03-29	Carsten Kossendey	NF	no factor TF: 70-71
2011-12-22	Toby Tse	NF	no factor TF: 69-70
2010-01-25	Gnorfe	NF	no factor TF: 68-69
2010-01-24	Gnorfe	NF	no factor TF: 67-68
2009-11-14	Derrick Forchetti	NF	no factor TF: 66-67
2009-09-03	Aleksey Osadchiy	NF	no factor TF: 65-66
2009-09-01	Sturle Sunde	NF	no factor TF: 64-65
2009-02-12	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