7 193 861 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
949962131553569557095266534183	30	99.6	2023-01-27 00:20:52

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)	1999-08-16	Jeff Runaldue	54F6CD276AFFBE58	3220892
Verified (Factored)	1999-08-22	Hugh Sconyers	54F6CD276AFFBE58	3611623

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2023-02-01	Perig	BC0F25C34EDFC511	1	1597114	5	3

P-1 factors

Date	Factor	B1	B2
2023-01-27	949962131553569557095266534183	3300000	11508336840

History

Date	User	Type	Result
2023-02-01	Steve Jacobson	CERT	PRP Certification Proof certified good
2023-02-01	Perig	C-PRP	M7193861/949962131553569557095266534183 : BC0F25C34EDFC511 PRP proof power = 8 PRP: Verified Proof certified good
2023-01-27	DRobinsonPE	F-PM1	Factor: 949962131553569557095266534183 / (P-1, B1=3300000, B2=11508336840)
2022-06-04	USAFSS	NF-PM1	B1=401000, B2=23128000
2021-09-28	SRBase	NF	no factor from 2^71 to 2^72
2021-08-25	SRBase	NF	no factor from 2^70 to 2^71
2021-08-19	SRBase	NF	no factor from 2^69 to 2^70
2020-03-13	TJAOI	NF	no factor from 2^68 to 2^69
2018-07-31	ramgeis	NF	no factor from 2^67 to 2^68
2016-10-28	Gordon Spence	NF	no factor from 2^66 to 2^67
2015-06-21	VictordeHollander	NF	no factor from 2^65 to 2^66
2014-02-04	lycorn	NF	no factor from 2^64 to 2^65
2014-02-02	Nesowa	NF	no factor from 2^63 to 2^64
2011-12-25	James Heinrich	NF-PM1	B1=140000, B2=2940000, E=6
2009-08-11	Carsten Kossendey	NF-PM1	B1=40000, B2=610000, E=4