40 325 119 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 2⁷²

P-1

B1 =	690000
B2 =	19500000

Status	Date	User	Residue	Shift	Software
Bad	2008-03-05	C. Cooper / S. Boone	603B2545509FB5F6	7338641	Windows,Prime95,v24 final,NT service,(aka Wc5)
Verified	2016-06-06	kkmrkkblmbrbk	98D3A2F8A9F960CC	4505984	Linux 64-bit,Prime95,v28.9,build 2
Verified	2016-07-16	riccardo uberti	98D3A2F8A9F960CC	22502035	Windows 64-bit,Prime95,v28.9,build 2

History

Date	User	Type	Result
2024-05-21	James Heinrich	NF	no factor TF: 68-69
2020-10-20	Sid & Andy	NF	no factor TF: 74-75
2020-01-11	Sid & Andy	NF	no factor TF: 73-74
2019-10-04	-anonymous-	NF	no factor TF: 72-73
2016-07-16	riccardo uberti	C-LL	98D3A2F8A9F960CC
2016-06-12	riccardo uberti	NF-PM1	B1=690000, B2=19500000, E=6
2016-06-06	kkmrkkblmbrbk	C-LL	98D3A2F8A9F960CC
2015-04-04	NoPolarBearsHere	NF	no factor TF: 71-72
2015-01-02	ixfd64	NF	no factor TF: 69-71
2012-10-08	Carsten Kossendey	NF	no factor TF: 68-69
2008-03-03	curtisc	C-LL	603B2545509FB5F6
2007-12-31	curtisc	NF	no factor TF: 1-68
2007-12-31	curtisc	NF-PM1	B1=390000, B2=2047500
2007-02-05	LordJulius	NF	no factor TF: 1-68
2007-01-16	LordJulius	NF	no factor TF: 1-68