45 896 731 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Composite: proven not-prime with Lucas-Lehmer test

TF

No factors below 2⁷⁵

TF target 2⁷²

P-1

B1 =	1500000
B2 =	30000000

Status	Date	User	Residue	Shift
Verified	2012-03-22	namjoshi	6258A47DF8C340B3	15121420
Verified	2017-07-04	frolyar	6258A47DF8C340B3	3592277

History

Date	User	Type	Result
2024-06-07	LaurV	NF	no factor from 2^71 to 2^72
2020-05-10	Sid & Andy	NF	no factor from 2^74 to 2^75
2020-04-02	Sid & Andy	NF-PM1	B1=1500000, B2=30000000, E=12
2019-12-20	-Anonymous-	NF	no factor from 2^73 to 2^74
2018-02-17	-Anonymous-	NF	no factor from 2^72 to 2^73
2017-07-04	frolyar	C-LL	6258A47DF8C340B3
2016-02-23	Mark Rose	NF	no factor from 2^63 to 2^64
2013-05-15	Architects Cubed	NF	no factor from 2^71 to 2^72
2012-03-22	namjoshi	C-LL	6258A47DF8C340B3
2011-12-07	Greg	NF	no factor from 2^70 to 2^71
2011-12-07	Greg	NF	no factor from 2^69 to 2^70
2011-12-03	lalera	NF	no factor from 2^68 to 2^69
2009-08-29	-Anonymous-	NF-PM1	B1=780000