4 894 499 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
5520994873	10	32.4	old
9726017843466974953	19	63.1	2016-12-08 12:33:04
363158604945087670129	21	68.3	2019-07-25 01:32:48

ECM

Digits	B1	Curves
25	50000	3 / 280

Estimated T-Level: 20.1 ⓘ

TF below 2^62 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-11-20	kkmrkkblmbrbk	1531D440E270A157	2	581419	5	3
Verified (Factored)	2018-04-05	Oliver Kruse	1531D440E270A157	2	4118283	5	3
Verified	2019-07-25	ATH	1531D440E270A157	3	4066083	5	3

History

Date	User	Type	Result
2023-09-11	USAFSS	NF-PM1	B1=256000, B2=105522060
2019-07-25	ATH	C-PRP	M4894499/5520994873/9726017843466974953/363158604945087670129 : 1531D440E270A157 PRP: Verified PRP without proof (not generated)
2019-07-25	MarkS	F-ECM	Factor: 363158604945087670129 / (ECM curve 3, B1=50000, B2=5000000)
2018-04-05	Oliver Kruse	C-PRP	M4894499/5520994873/9726017843466974953 : 1531D440E270A157 PRP: Verified PRP without proof (not generated)
2017-11-20	kkmrkkblmbrbk	C-PRP	M4894499/5520994873/9726017843466974953 : 1531D440E270A157 PRP: Verified PRP without proof (not generated)
2016-12-08	TJAOI	F	Factor: 9726017843466974953 / TF: 63-64