4 547 513 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
8123257744366258591	19	62.8	2011-12-28 22:50:42

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	Shift
Verified (Factored)		Stephen Wood	E1ADDF761FB3C1BF	0
Verified (Factored)	2000-11-15	Robin Tremblay	E1ADDF761FB3C1BF	3331066

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-20	kkmrkkblmbrbk	34FB669AD0BF5793	1	0	1	3
Verified	2018-02-22	Oliver Kruse	34FB669AD0BF5793	1	759190	1	3

History

Date	User	Type	Result
2023-03-15	USAFSS	NF-PM1	B1=240000, B2=133431870
2018-02-22	Oliver Kruse	C-PRP	M4547513/8123257744366258591 : 34FB669AD0BF5793 PRP: Verified PRP without proof (not generated)
2017-09-20	kkmrkkblmbrbk	C-PRP	M4547513/8123257744366258591 : 34FB669AD0BF5793 PRP: Verified PRP without proof (not generated)
2011-12-28	GrunwalderGIMP	F-ECM	Factor: 8123257744366258591
2011-07-08	USAFSS	NF-PM1	B1=55000, B2=866250, E=6
2010-09-03	markr	NF	no factor from 2^61 to 2^62