9 658 003 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
1952953724273126359207793	25	80.7	2015-03-06 00:08:37

ECM

Digits	B1	Curves
25	50000	86 / 280

Estimated T-Level: 21.5 ⓘ

TF below 2^67 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)	2000-03-22	EDNY	349C347E334374AF	1397629
Verified (Factored)	2003-06-30	Carl Mikkelsen	349C347E334374AF	4164086

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2019-10-17	mnd9	0DF6E496EB6B6C80	1	752763	5	3
Verified	2020-12-20	Richard Thomas	0DF6E496EB6B6C80	1	8094911	5	3

History

Date	User	Type	Result
2020-12-21	curtisc	CERT	PRP Certification Proof certified good
2020-12-20	Richard Thomas	C-PRP	M9658003/1952953724273126359207793 : 0DF6E496EB6B6C80 PRP proof power = 8 PRP: Verified Proof certified good
2019-10-17	mnd9	C-PRP	M9658003/1952953724273126359207793 : 0DF6E496EB6B6C80 PRP: Verified PRP without proof (not generated)
2015-03-06	JimBa	F-ECM	Factor: 1952953724273126359207793 / (ECM curve 86, B1=50000, B2=5000000)
2013-08-28	Nesowa	NF	no factor from 2^64 to 2^65
2013-02-18	Nesowa	NF-PM1	B1=115000, B2=2185000, E=6