3 862 559 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
45809864763703	14	45.4	old
3947104644618560239	19	61.8	2016-05-30 11:33:48

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	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	PRP without proof (not generated)	2017-09-20	kkmrkkblmbrbk	51959501929EB051	2	0	1	3
Verified	PRP without proof (not generated)	2017-12-22	storm5510	51959501929EB051	2	821876	1	3

History

Date	User	Type	Result
2022-06-19	LordJulius	NF	no factor TF: 66-67
2022-06-19	LordJulius	NF	no factor TF: 64-65
2022-06-19	LordJulius	NF	no factor TF: 65-66
2022-06-19	LordJulius	NF	no factor TF: 63-64
2022-06-19	LordJulius	NF	no factor TF: 62-63
2022-05-21	Joss	NF-PM1	B1=200000, B2=130364850
2022-04-17	Joss	NF-PM1	B1=200000
2022-03-19	Joss	NF	no factor TF: 67-68
2017-12-22	storm5510	C-PRP	M3862559/45809864763703/3947104644618560239 : 51959501929EB051
2017-09-20	kkmrkkblmbrbk	C-PRP	M3862559/3947104644618560239/45809864763703 : 51959501929EB051
2016-05-30	TJAOI	F	Factor: 3947104644618560239