4 120 003 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 1 known prime factor. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
10461004758978322056841	23	73.1	2024-11-26 23:39:08

ECM

Digits	B1	Curves
25	50000	156 / 280

Estimated T-Level: 22.8 ⓘ

TF below 2^71 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Gord Palameta	BCD19BA8000001A4	0
Verified (Factored)	1999-11-04	Stefan Weber	BCD19BA8000001A4	2046774

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2024-11-26	fordobr	EEF28471456AF606	1	2309073	5	3

History

Date	User	Type	Result
2024-11-27	Theo Polidano	CERT	PRP Certification Proof certified good
2024-11-26	fordobr	C-PRP	M4120003/10461004758978322056841 : EEF28471456AF606 PRP proof power = 7 PRP: Verified Proof certified good
2024-11-26	fordobr	F-ECM	Factor: 10461004758978322056841 / (ECM curve 37, B1=63602, B2=127129275, Edwards Sigma=3140365842564569)
2022-04-27	mikr	NF	no factor from 2^70 to 2^71
2021-09-01	ATH	NF-PP1	Start=2/7, B1=2500000, B2=167500000
2021-06-25	axn	NF-PM1	B1=13000000, B2=650000000
2021-05-31	axn	NF	no factor from 2^69 to 2^70
2021-05-31	axn	NF	no factor from 2^68 to 2^69
2021-04-22	Zhang Ruichong	NF-PM1	B1=400000, B2=18000000
2018-11-19	Yxinity	NF	no factor from 2^67 to 2^68
2017-12-12	Yxinity	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2015-06-01	snme2pm1	NF	no factor from 2^65 to 2^66
2013-12-27	Squeeky_Squirrel	NF-PM1	B1=140000, B2=3290000, E=6
2013-10-28	David Campeau	NF	no factor from 2^64 to 2^65
2013-09-09	Jayder	NF	no factor from 2^63 to 2^64
2011-08-03	USAFSS	NF-PM1	B1=70000, B2=1102500, E=6
2011-07-01	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2010-12-02	Grant McCracken	NF	no factor from 2^61 to 2^62