1 980 233 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
959426116105529497	18	59.7	old
164915405820399231719183089	27	87.1	2021-02-11 06:03:01

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	106 / 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)		Thomas Honold	A9064D9A8EFCC597	0
Verified (Factored)	1999-01-17	Jack Woodrow	A9064D9A8EFCC597	1037817

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-05	Oliver Kruse	595B762F51327B16	1	0	1	3
Verified (Factored)	2017-11-12	kkmrkkblmbrbk	595B762F51327B16	1	751526	1	3
Verified	2021-02-12	ViliamF	D2C86544D7EB3C43	2	1882184	5	3

History

Date	User	Type	Result
2023-09-02	Kevin_9611	NF-PM1	B1=1000000, B2=1685121900
2022-08-13	USAFSS	NF-PM1	B1=88000, B2=95986800
2021-02-12	jwnutter	CERT	PRP Certification Proof certified good
2021-02-12	ViliamF	C-PRP	M1980233/959426116105529497/164915405820399231719183089 : D2C86544D7EB3C43 PRP proof power = 7 PRP: Verified Proof certified good
2021-02-11	_p95holder_	F-ECM	Factor: 164915405820399231719183089 / (ECM curve 4, B1=50000, B2=5000000)
2017-11-12	kkmrkkblmbrbk	C-PRP	M1980233/959426116105529497 : 595B762F51327B16 PRP: Verified (Factored) PRP without proof (not generated)
2017-10-05	Oliver Kruse	C-PRP	M1980233/959426116105529497 : 595B762F51327B16 PRP: Verified (Factored) PRP without proof (not generated)