158 008 681 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

No known factors, not tested for primality

TF

No factors below 2⁷⁸

TF target 2⁷⁸

P-1

B1 =	2000000
B2 =	755033370

History

Date	User	Type	Result
2025-07-16	Greg	NF-PM1	B1=2000000, B2=755033370
2025-07-11	Greg	NF	no factor from 2^77 to 2^78
2025-07-05	Greg	NF	no factor from 2^76 to 2^77
2024-08-22	SRBase	NF	no factor from 2^75 to 2^76
2023-01-29	Borek	NF	no factor from 2^74 to 2^75
2016-11-01	La Güira	NF	no factor from 2^73 to 2^74
2016-11-01	La Güira	NF	no factor from 2^72 to 2^73
2016-11-01	La Güira	NF	no factor from 2^71 to 2^72
2016-11-01	La Güira	NF	no factor from 2^70 to 2^71
2014-11-14	La Güira	NF	no factor from 2^69 to 2^70
2014-11-14	La Güira	NF	no factor from 2^68 to 2^69
2014-11-14	La Güira	NF	no factor from 2^66 to 2^68
2013-02-13	tsc	NF	no factor from 2^65 to 2^66
2011-01-31	Richard	NF	no factor from 2^64 to 2^65