4 395 869 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 3 known prime factors. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
61542167	8	25.9	old
430733616906351247	18	58.6	2015-09-16 11:12:24
9804532104926327641	19	63.1	2016-12-12 12:21:53

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	2017-11-16	kkmrkkblmbrbk	CBCE6DC193C69B8E	3	45419	5	3
Verified	2018-02-08	Oliver Kruse	CBCE6DC193C69B8E	3	108639	5	3

History

Date	User	Type	Result
2023-06-05	USAFSS	NF-PM1	B1=336000, B2=179978370
2018-02-08	Oliver Kruse	C-PRP	M4395869/61542167/430733616906351247/9804532104926327641 : CBCE6DC193C69B8E PRP: Verified PRP without proof (not generated)
2017-11-16	kkmrkkblmbrbk	C-PRP	M4395869/61542167/430733616906351247/9804532104926327641 : CBCE6DC193C69B8E PRP: Verified PRP without proof (not generated)
2016-12-12	TJAOI	F	Factor: 9804532104926327641 / TF: 63-64
2015-09-16	TJAOI	F	Factor: 430733616906351247 / TF: 58-59