2 388 173 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
6209249801	10	32.5	old
322150208663	12	38.2	2008-07-14 20:23:31
22579307936332739910996983	26	84.2	2022-12-03 22:42:09

ECM

Digits	B1	Curves
25	50000	70 / 280

Estimated T-Level: 21.3 ⓘ

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)	2017-10-12	Oliver Kruse	43122A2D98EF6B91	2	694911	5	3
Verified (Factored)	2017-11-25	kkmrkkblmbrbk	43122A2D98EF6B91	2	865554	5	3
Verified	2022-12-14	/r/counting	43122A2D98EF6B91	3	792958	5	3
Verified	2023-01-11	firejuggler	43122A2D98EF6B91	3	2036344	5	3

History

Date	User	Type	Result
2023-01-11	IC_9	CERT	PRP Certification Proof certified good
2023-01-11	firejuggler	C-PRP	M2388173/6209249801/322150208663/22579307936332739910996983 : 43122A2D98EF6B91 PRP proof power = 7 PRP: Verified Proof certified good
2022-12-14	volki	CERT	PRP Certification Proof certified good
2022-12-14	/r/counting	C-PRP	M2388173/6209249801/322150208663/22579307936332739910996983 : 43122A2D98EF6B91 PRP proof power = 7 PRP: Verified Proof certified good
2022-12-03	_p95holder_	F-ECM	Factor: 22579307936332739910996983 / (ECM curve 3, B1=50000, B2=5000000)
2018-09-28	alpertron	NF-PM1	B1=2000000, B2=60000000, E=12
2017-11-25	kkmrkkblmbrbk	C-PRP	M2388173/6209249801/322150208663 : 43122A2D98EF6B91 PRP: Verified (Factored) PRP without proof (not generated)
2017-10-12	Oliver Kruse	C-PRP	M2388173/6209249801/322150208663 : 43122A2D98EF6B91 PRP: Verified (Factored) PRP without proof (not generated)
2008-07-14	George Woltman	F-ECM	Factor: 322150208663