45 109 879 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 2⁷²

P-1

B1 =	550000
B2 =	16362500

Status	Date	User	Residue	Shift	Software
Bad	2009-11-01	Larry Logory	C6D41AC276FACC23	15366008	Windows,Prime95,v25.8,build 5
Verified	2016-06-02	kkmrkkblmbrbk	2F5F04166C281231	6148192	Linux 64-bit,Prime95,v28.9,build 2
Verified	2016-09-23	Mark Rose	2F5F04166C281231	17346282	Linux 64-bit,Prime95,v28.9,build 2

History

Date	User	Type	Result
2024-05-23	LOBES	NF	no factor TF: 69-70
2018-06-09	Robin89	NF	no factor TF: 72-73
2016-09-23	Mark Rose	C-LL	2F5F04166C281231
2016-06-02	kkmrkkblmbrbk	C-LL	2F5F04166C281231
2016-02-23	Mark Rose	NF	no factor TF: 63-64
2015-08-31	wombatman	NF	no factor TF: 71-72
2015-08-31	wombatman	NF	no factor TF: 70-71
2015-08-24	Carsten Kossendey	NF	no factor TF: 69-70
2014-08-01	VictordeHollander	NF	no factor TF: 68-69
2009-11-01	Larry Logory	C-LL	C6D41AC276FACC23
2009-09-26	Larry Logory	NF-PM1	B1=550000, B2=16362500, E=4
2007-11-17	ComputerraRU	NF	no factor TF: 64-65
2007-11-17	ComputerraRU	NF	no factor TF: 67-68
2007-11-17	ComputerraRU	NF	no factor TF: 65-66
2007-11-17	ComputerraRU	NF	no factor TF: 66-67
2007-01-16	1997rj7	NF	no factor TF: 1-63