8 139 707 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
177458965727333872803645071	27	87.2	2021-12-28 12:10:19

ECM

Digits	B1	Curves
25	50000	6 / 280

Estimated T-Level: 20.1 ⓘ

TF below 2^62 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)	2000-04-19	Thomas Traber	EB81D3392229AA6C	3023096
Verified (Factored)	2002-12-02	chris clark	EB81D3392229AA6C	3339984

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2022-01-04	GAN	31D374D043F3663F	1	2634450	5	3

P-1 factors

Date	Factor	B1	B2
2021-12-28	177458965727333872803645071	6000000	6000000

History

Date	User	Type	Result
2023-04-17	Flaukrotist	NF-PM1	B1=7800000, B2=7498993590
2022-01-04	fackpampen	CERT	PRP Certification Proof certified good
2022-01-04	GAN	C-PRP	M8139707/177458965727333872803645071 : 31D374D043F3663F PRP proof power = 8 PRP: Verified Proof certified good
2021-12-28	Flaukrotist	F-PM1	Factor: 177458965727333872803645071 / (P-1, B1=6000000)
2021-10-24	SRBase	NF	no factor from 2^71 to 2^72
2021-09-02	SRBase	NF	no factor from 2^70 to 2^71
2021-08-19	SRBase	NF	no factor from 2^69 to 2^70
2019-12-08	mnd9	NF	no factor from 2^68 to 2^69
2018-07-05	chuenkit	NF	no factor from 2^67 to 2^68
2015-12-01	snme2pm1	NF	no factor from 2^66 to 2^67
2015-05-26	snme2pm1	NF	no factor from 2^65 to 2^66
2013-09-01	David Campeau	NF	no factor from 2^64 to 2^65
2013-08-23	David Campeau	NF	no factor from 2^63 to 2^64
2012-10-25	Nesowa	NF-PM1	B1=100000, B2=1975000, E=6