2 189 333 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
298988450479	12	38.1	old
220811241237448923088457	24	77.5	2022-04-03 15:09:28

ECM

Digits	B1	Curves
25	50000	100 / 280

Estimated T-Level: 21.8 ⓘ

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

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-09	Oliver Kruse	F4F02147C915D6C8	1	0	1	3
Verified (Factored)	2017-11-19	ATH	F4F02147C915D6C8	1	1364624	1	3
Verified	2022-04-03	SRJ2877	FB9E27970C0F85A4	2	588335	5	3

History

Date	User	Type	Result
2022-04-04	soldcake	CERT	PRP Certification Proof certified good
2022-04-03	SRJ2877	C-PRP	M2189333/298988450479/220811241237448923088457 : FB9E27970C0F85A4 PRP proof power = 7 PRP: Verified Proof certified good
2022-04-03	Alex Kruppa	F-ECM	Factor: 220811241237448923088457 / (ECM curve 6, B1=50000, B2=5300000, Sigma=2320085691845701)
2017-11-19	ATH	C-PRP	M2189333/298988450479 : F4F02147C915D6C8 PRP: Verified (Factored) PRP without proof (not generated)
2017-10-09	Oliver Kruse	C-PRP	M2189333/298988450479 : F4F02147C915D6C8 PRP: Verified (Factored) PRP without proof (not generated)
2016-03-30	alpertron	NF-PM1	B1=500000, B2=15000000, E=12