2 523 967 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
8420210084408383256153	22	72.8	2021-11-25 02:31:23

ECM

Digits	B1	Curves
25	50000	138 / 280

Estimated T-Level: 22.5 ⓘ

TF below 2^70 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Ed Knapton	97BEAB1ADD050C49	0
Verified (Factored)		Tom Cage	97BEAB1ADD050C49	0
Verified (Factored)		Andrea Dyballa	97BEAB1ADD050C49	881989
Bad	1999-12-23	Milan Kunderlik	7EBCF5EBA3B071D4	309055

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2021-11-25	SRJ2877	BE799E2D2669983B	1	290067	5	3

History

Date	User	Type	Result
2021-11-26	Ben Delo	CERT	PRP Certification Proof certified good
2021-11-25	SRJ2877	C-PRP	M2523967/8420210084408383256153 : BE799E2D2669983B PRP proof power = 7 PRP: Verified Proof certified good
2021-11-25	daveward2005	F-ECM	Factor: 8420210084408383256153 / (ECM curve 4, B1=50000, B2=5000000, Sigma=7664801719329391)
2021-06-21	TJAOI	NF	no factor from 2^68 to 2^69
2019-04-22	TJAOI	NF	no factor from 2^67 to 2^68
2017-08-08	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-03-12	mikr	NF-PM1	B1=3200000, B2=112000000, E=12
2016-02-23	Mark Rose	NF	no factor from 2^59 to 2^60
2015-11-06	ramgeis	NF	no factor from 2^65 to 2^66
2015-02-23	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-02-23	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-11-30	lycorn	NF	no factor from 2^62 to 2^63
2012-06-13	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2009-01-28	Sturle Sunde	NF	no factor from 2^60 to 2^61