2 291 563 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
119564591089	12	36.8	old
5571394625633	13	42.3	2008-07-14 20:22:46
994262336069402801	18	59.8	2015-12-14 12:43:15
297726960812332839127	21	68.0	2022-08-18 14:16:24

ECM

Digits	B1	Curves
25	50000	82 / 280

Estimated T-Level: 21.5 ⓘ

TF below 2^66 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-09-30	alpertron	736BB3C5A861A70A	3	0	1	3
Verified (Factored)	2017-10-30	Oliver Kruse	736BB3C5A861A70A	3	2022833	1	3
Verified	2022-08-21	_p95holder_	20A28054CE08D590	4	1950017	5	3
Verified	2022-08-27	LaurV	20A28054CE08D590	4	993690	5	3

History

Date	User	Type	Result
2022-08-27	Zhang Ruichong	CERT	PRP Certification Proof certified good
2022-08-27	LaurV	C-PRP	M2291563/119564591089/5571394625633/994262336069402801/297726960812332839127 : 20A28054CE08D590 PRP proof power = 6 PRP: Verified Proof certified good
2022-08-21	_p95holder_	C-PRP	M2291563/119564591089/5571394625633/994262336069402801/297726960812332839127 : 20A28054CE08D590 PRP: Verified PRP without proof (not generated)
2022-08-18	_p95holder_	F-ECM	Factor: 297726960812332839127 / (ECM curve 6, B1=50000, B2=5000000)
2017-10-30	Oliver Kruse	C-PRP	M2291563/119564591089/5571394625633/994262336069402801 : 736BB3C5A861A70A PRP: Verified PRP without proof (not generated)
2017-09-30	alpertron	C-PRP	M2291563/119564591089/5571394625633/994262336069402801 : 736BB3C5A861A70A PRP: Verified PRP without proof (not generated)
2016-04-22	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2015-12-14	TJAOI	F	Factor: 994262336069402801 / TF: 59-60
2008-07-14	George Woltman	F-ECM	Factor: 5571394625633