4 032 491 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
7131831162329673363401	22	72.6	2021-06-14 00:56:31

ECM

Digits	B1	Curves
25	50000	56 / 280

Estimated T-Level: 21.0 ⓘ

TF below 2^65 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)	1998-08-24	Phillip Twiss	768B6B7ADA274440	0
Verified (Factored)	1999-09-14	Marcin Szymkiewicz	768B6B7ADA274440	2557174

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2021-06-15	kutens	35708AFF18BB82A8	1	3322036	5	3

P-1 factors

Date	Factor	B1	B2
2023-05-27	7131831162329673363401	600000	417292590

History

Date	User	Type	Result
2023-05-27	USAFSS	F-PM1	Factor: 7131831162329673363401 / (P-1, B1=600000, B2=417292590)
2021-06-15	Yvero	CERT	PRP Certification Proof certified good
2021-06-15	kutens	C-PRP	M4032491/7131831162329673363401 : 35708AFF18BB82A8 PRP proof power = 7 PRP: Verified Proof certified good
2021-06-14	ATH	F-PP1	Start=2/7, B1=2500000, B2=172500000, Factor: 7131831162329673363401
2021-04-05	Dylan Delgado	NF-PM1	B1=360000, B2=18360000
2020-02-10	mikr	NF	no factor from 2^69 to 2^70
2020-02-10	mikr	NF	no factor from 2^68 to 2^69
2018-10-18	Yxinity	NF	no factor from 2^67 to 2^68
2016-09-06	kkmrkkblmbrbk	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^61 to 2^63
2015-05-19	snme2pm1	NF	no factor from 2^65 to 2^66
2013-10-21	David Campeau	NF	no factor from 2^64 to 2^65
2013-08-08	Jayder	NF	no factor from 2^63 to 2^64
2012-09-18	Squeeky_Squirrel	NF-PM1	B1=260000, B2=6305000, E=12
2011-06-26	USAFSS	NF-PM1	B1=40000, B2=580000
2009-11-16	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2009-07-14	Carsten Kossendey	NF-PM1	B1=20000, B2=290000