1 652 909 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
12864471208340125471	20	63.5	2010-05-14 10:17:10

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	134 / 640

Estimated T-Level: 26.0 ⓘ

TF below 2^82 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)	1998-02-01	MIT Prime Team	B8F456D87ED0EAAA	0
Verified (Factored)	1999-01-02	Jo Yeong Uk	B8F456D87ED0EAAA	1076583

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-02	Oliver Kruse	471176AD24F6E71A	1	0	1	3
Verified	2017-11-02	kkmrkkblmbrbk	471176AD24F6E71A	1	1134169	1	3

History

Date	User	Type	Result
2022-03-09	LordJulius	NF	no factor from 2^1 to 2^60
2022-03-08	LordJulius	NF	no factor from 2^58 to 2^60
2017-11-02	kkmrkkblmbrbk	C-PRP	M1652909/12864471208340125471 : 471176AD24F6E71A PRP: Verified PRP without proof (not generated)
2017-10-02	Oliver Kruse	C-PRP	M1652909/12864471208340125471 : 471176AD24F6E71A PRP: Verified PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2010-05-14	SubPrime	F-ECM	Factor: 12864471208340125471
2010-04-28	Architects Cubed	NF	no factor from 2^60 to 2^61