49 803 307 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 2⁷⁴

TF target 2⁷³

P-1

B1 =	580000
B2 =	15660000

Status	Date	User	Residue	Shift	Software
Verified	2010-08-28	Kyle Z Schmidt	E495C2785AF0A4F1	20916353	Windows 64-bit,Prime95,v25.11,build 2
Verified	2018-10-20	Vvivk00	E495C2785AF0A4F1	3217252	Windows 64-bit,Prime95,v29.4,build 8

History

Date	User	Type	Result
2024-08-18	Jarod McClintock	NF	no factor TF: 69-70
2024-07-12	Wentao Huang	NF	no factor TF: 72-73
2019-07-10	-anonymous-	NF	no factor TF: 73-74
2018-10-20	Vvivk00	C-LL	E495C2785AF0A4F1
2017-10-12	One Man	NF	no factor TF: 72-73
2015-12-05	-anonymous-	NF	no factor TF: 71-72
2015-11-02	Sid & Andy	NF	no factor TF: 70-71
2015-06-08	Architects Cubed	NF	no factor TF: 69-70
2010-08-28	Kyle Z Schmidt	C-LL	E495C2785AF0A4F1
2010-04-23	Kyle Z Schmidt	NF-PM1	B1=580000, B2=15660000, E=6
2008-09-06	PrimeCruncher	NF	no factor TF: 1-69