155 528 099 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

Assigned

Assigned	User	Work Type	Stage	% Done	Updated	Expired
2025-07-27	GPU Factoring	trial factoring		0.00 %	2025-08-12

History

Date	User	Type	Result
2025-06-01	brian-nebius	NF	no factor from 2^77 to 2^78
2024-11-05	Erik Wouters	NF	no factor from 2^76 to 2^77
2024-08-15	SRBase	NF	no factor from 2^75 to 2^76
2023-02-18	SRBase	NF	no factor from 2^74 to 2^75
2021-11-15	SRBase	NF	no factor from 2^73 to 2^74
2017-10-24	Ilya Alexandrov	NF	no factor from 2^72 to 2^73
2017-10-23	Baltin	NF	no factor from 2^71 to 2^72
2017-10-16	trebor	NF	no factor from 2^70 to 2^71
2017-08-13	La Güira	NF	no factor from 2^69 to 2^70
2017-03-05	BrionH	NF	no factor from 2^68 to 2^69
2016-05-04	sps97003	NF	no factor from 2^67 to 2^68
2015-04-12	subgenius	NF	no factor from 2^66 to 2^67
2013-02-03	Charles A. Morris	NF	no factor from 2^65 to 2^66
2011-01-23	Charles A. Morris	NF	no factor from 2^64 to 2^65