1 640 941 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
75485056246040929863359	23	76.0	2011-09-18 16:37:46
80226402503939779977104879	26	86.1	2022-11-14 11:37:14

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	107 / 640

Estimated T-Level: 25.8 ⓘ

TF below 2^81 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Owen Lawrence	B1F16A19C96573A0	0
Verified (Factored)	1998-11-14	Angus Cameron	B1F16A19C96573A0	312973

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-02	Oliver Kruse	4DFC882CE5E0FD42	1	0	1	3
Verified (Factored)	2017-11-02	kkmrkkblmbrbk	4DFC882CE5E0FD42	1	67765	1	3
Verified	2022-11-15	LordJulius	B0D51584E06596D4	2	1335588	5	3

History

Date	User	Type	Result
2022-11-15	denis cazor	CERT	PRP Certification Proof certified good
2022-11-15	LordJulius	C-PRP	M1640941/75485056246040929863359/80226402503939779977104879 : B0D51584E06596D4 PRP proof power = 6 PRP: Verified Proof certified good
2022-11-14	TJAOI	F-ECM	Factor: 80226402503939779977104879 / (ECM curve 8, B1=250000, B2=40000000)
2017-11-02	kkmrkkblmbrbk	C-PRP	M1640941/75485056246040929863359 : 4DFC882CE5E0FD42 PRP: Verified (Factored) PRP without proof (not generated)
2017-10-02	Oliver Kruse	C-PRP	M1640941/75485056246040929863359 : 4DFC882CE5E0FD42 PRP: Verified (Factored) PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2011-09-18	Dmitry B. Khachaturov	F-ECM	Factor: 75485056246040929863359
2010-07-30	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2010-04-29	Architects Cubed	NF	no factor from 2^60 to 2^61