49 794 491 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	2010-08-26	Kyle Z Schmidt	ADE190F1B0AB7419	15126764	Windows 64-bit,Prime95,v25.11,build 2
Verified	2018-10-24	ANONYMOUS	ADE190F1B0AB7419	11963401	Windows 64-bit,Prime95,v29.4,build 8

History

Date	User	Type	Result
2024-08-18	Jarod McClintock	NF	no factor TF: 69-70
2018-10-24	ANONYMOUS	C-LL	ADE190F1B0AB7419
2018-01-24	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
2010-08-26	Kyle Z Schmidt	C-LL	ADE190F1B0AB7419
2010-04-21	Kyle Z Schmidt	NF-PM1	B1=580000, B2=15515000
2008-09-23	ComputerraRU	NF	no factor TF: 64-65
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: 65-66
2008-09-23	ComputerraRU	NF	no factor TF: 63-64
2008-09-23	ComputerraRU	NF	no factor TF: 67-68