37 747 049 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 2⁷³

TF target 2⁷¹

P-1

B1 =	355000
B2 =	2662500

Status	Date	User	Residue	Shift	Software
Verified	2007-07-24	Ahmer Ali	FB29BE36451CB754	7964913	Windows,Prime95,v23,NT service,(aka WZ5)
Verified	2016-09-21	Dubslow	FB29BE36451CB754	27057253	Linux 64-bit,Prime95,v28.7,build 1

History

Date	User	Type	Result
2022-07-17	TheJudger	NF	no factor TF: 72-73
2022-05-09	Architects Cubed	NF	no factor TF: 71-72
2016-09-21	Dubslow	C-LL	FB29BE36451CB754
2014-08-28	chalsall	NF	no factor TF: 70-71
2014-08-28	chalsall	NF	no factor TF: 69-70
2007-07-24	ahmerali	C-LL	FB29BE36451CB754
2007-06-15	ahmerali	NF	no factor TF: 1-69
2007-06-15	ahmerali	NF-PM1	B1=355000, B2=2662500
2006-05-12	-anonymous-	NF	no factor TF: 1-67