155 722 981 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
2025-08-12	Phantomas	factor P-1 large		0.00 %	2025-08-12

History

Date	User	Type	Result
2025-05-29	brian-nebius	NF	no factor from 2^77 to 2^78
2024-10-07	k0r3	NF	no factor from 2^76 to 2^77
2024-05-06	Greg	NF	no factor from 2^68 to 2^69
2016-08-15	Mausbieber_Gucky	NF	no factor from 2^75 to 2^76
2016-08-15	Mausbieber_Gucky	NF	no factor from 2^74 to 2^75
2016-08-15	Mausbieber_Gucky	NF	no factor from 2^73 to 2^74
2016-08-15	Mausbieber_Gucky	NF	no factor from 2^72 to 2^73
2016-08-15	Mausbieber_Gucky	NF	no factor from 2^71 to 2^72
2016-08-15	Mausbieber_Gucky	NF	no factor from 2^70 to 2^71
2016-08-15	Mausbieber_Gucky	NF	no factor from 2^69 to 2^70
2016-07-21	Josh Famestad	NF	no factor from 2^68 to 2^69
2016-05-04	archeious	NF	no factor from 2^67 to 2^68
2015-04-13	Alex Wu	NF	no factor from 2^66 to 2^67
2013-02-06	nextPrime	NF	no factor from 2^65 to 2^66
2011-01-24	Thomas Stork	NF	no factor from 2^64 to 2^65