172 188 851 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 2⁷⁶

TF target 2⁷⁸

History

Date	User	Type	Result
2024-09-19	SRBase	NF	no factor from 2^75 to 2^76
2023-03-22	SRBase	NF	no factor from 2^74 to 2^75
2019-04-30	Ayczly	NF	no factor from 2^73 to 2^74
2019-04-30	Ayczly	NF	no factor from 2^72 to 2^73
2019-04-30	Ayczly	NF	no factor from 2^71 to 2^72
2018-12-06	Zenghui	NF	no factor from 2^70 to 2^71
2018-03-27	RobertN	NF	no factor from 2^69 to 2^70
2015-04-21	mikr	NF	no factor from 2^68 to 2^69
2015-04-21	mikr	NF	no factor from 2^66 to 2^68
2013-04-07	Richard	NF	no factor from 2^65 to 2^66
2011-03-01	Richard	NF	no factor from 2^64 to 2^65
2010-07-12	Torchwood Institute	NF	no factor from 2^63 to 2^64