3 861 719 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

Composite, with 2 known prime factors. Cofactor is composite.

Trial Factored to 2⁶⁸

TF target 2⁶⁴

Factored

Factor	Digits	Bits	Date
7723439	7	22.9	old
741450049	9	29.5	2008-09-07 21:12:43

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	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	PRP without proof (not generated)	2017-09-20	kkmrkkblmbrbk	F4EA515D67DFF34B	2	0	1	3
Verified	PRP without proof (not generated)	2017-12-21	storm5510	F4EA515D67DFF34B	2	146351	1	3

History

Date	User	Type	Result
2022-05-24	Joss	NF-PM1	B1=200000, B2=130364850
2020-11-07	Joss	NF-PM1	B1=386171, B2=3861719
2017-12-21	storm5510	C-PRP	M3861719/7723439/741450049 : F4EA515D67DFF34B
2017-09-20	kkmrkkblmbrbk	C-PRP	M3861719/741450049/7723439 : F4EA515D67DFF34B
2008-09-07	Will Edgington	F	Factor: 741450049

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