75 536 639 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 2⁷⁴

P-1

B1 =	630000
B2 =	12442500

Status	Date	User	Residue	Shift
Verified	2016-12-31	Conductor	D01E5151C9AF2590	60585502
Verified	2025-01-23	zar	D01E5151C9AF2590	18471601

History

Date	User	Type	Result
2025-01-23	zar	C-LL	D01E5151C9AF2590
2016-12-31	Conductor	C-LL	D01E5151C9AF2590
2016-07-22	Conductor	NF	no factor from 2^63 to 2^64
2016-05-09	bam	NF-PM1	B1=630000, B2=12442500
2016-02-19	Jerry Hallett	NF	no factor from 2^74 to 2^75
2016-02-19	Jerry Hallett	NF	no factor from 2^73 to 2^74
2016-02-12	Stef42	NF	no factor from 2^72 to 2^73
2015-09-09	1997rj7	NF	no factor from 2^71 to 2^72
2013-05-16	Manpowre	NF	no factor from 2^70 to 2^71
2010-05-29	Marzbug	NF	no factor from 2^69 to 2^70
2010-05-29	Marzbug	NF	no factor from 2^68 to 2^69
2010-05-29	Marzbug	NF	no factor from 2^67 to 2^68
2010-05-29	Marzbug	NF	no factor from 2^66 to 2^67
2010-05-29	Marzbug	NF	no factor from 2^65 to 2^66