49 794 449 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 2⁷³

P-1

B1 =	580000
B2 =	15515000

Status	Date	User	Residue	Shift	Software
Verified	2010-08-28	Kyle Z Schmidt	178D2CCC1B1F55F6	25108456	Windows 64-bit,Prime95,v25.11,build 2
Verified	2019-09-16	RudolphtheGimp	178D2CCC1B1F55F6	9937324	Mac OS X 64-bit,Prime95,v29.4,build 7

History

Date	User	Type	Result
2024-08-18	Jarod McClintock	NF	no factor TF: 69-70
2019-09-16	RudolphtheGimp	C-LL	178D2CCC1B1F55F6
2018-01-21	monst	NF	no factor TF: 72-73
2016-02-23	Mark Rose	NF	no factor TF: 1-63
2015-12-28	AirSquirrels	NF	no factor TF: 71-72
2015-12-28	AirSquirrels	NF	no factor TF: 70-71
2015-06-07	Architects Cubed	NF	no factor TF: 69-70
2010-08-28	Kyle Z Schmidt	C-LL	178D2CCC1B1F55F6
2010-04-23	Kyle Z Schmidt	NF-PM1	B1=580000, B2=15515000, E=6
2008-09-23	ComputerraRU	NF	no factor TF: 63-64
2008-09-23	ComputerraRU	NF	no factor TF: 66-67
2008-09-23	ComputerraRU	NF	no factor TF: 68-69
2008-09-23	ComputerraRU	NF	no factor TF: 67-68
2008-09-23	ComputerraRU	NF	no factor TF: 64-65
2008-09-23	ComputerraRU	NF	no factor TF: 65-66
2008-09-06	ComputerraRU	NF	no factor TF: 63-64
2008-09-06	ComputerraRU	NF	no factor TF: 64-65
2008-09-06	ComputerraRU	NF	no factor TF: 65-66
2008-09-06	ComputerraRU	NF	no factor TF: 66-67