1 147 301 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
21859872824368678263551	23	74.2	2013-10-01 20:51:02

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	106 / 640

Estimated T-Level: 25.8 ⓘ

TF below 2^81 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Edo de Roo Jankovic	AB950B5E8819E445	0
Verified (Factored)		Cornelius Caesar	AB950B5E8819E445	0
Verified (Factored)	2004-06-04	Brian J. Beesley	AB950B5E8819E445	50454

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-29	Oliver Kruse	B396037037EC0888	1	0	1	3
Verified	2017-10-17	Oliver Kruse	B396037037EC0888	1	865372	1	3
Verified	2018-01-06	ATH	B396037037EC0888	1	913660	1	3

P-1 factors

Date	Factor	B1	B2
2013-10-01	21859872824368678263551	1220000	35380000

History

Date	User	Type	Result
2022-03-07	LordJulius	NF	no factor from 2^58 to 2^60
2018-01-06	ATH	C-PRP	M1147301/21859872824368678263551 : B396037037EC0888 PRP: Verified PRP without proof (not generated)
2017-10-17	Oliver Kruse	C-PRP	M1147301/21859872824368678263551 : B396037037EC0888 PRP: Verified PRP without proof (not generated)
2017-09-29	Oliver Kruse	C-PRP	M1147301/21859872824368678263551 : B396037037EC0888 PRP: Verified PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=300000, B2=10000000, E=12
2013-10-01	David Campeau	F-PM1	Factor: 21859872824368678263551
2012-12-01	dbaugh	NF	no factor from 2^62 to 2^63
2012-08-30	Axelsson	NF	no factor from 2^61 to 2^62
2009-04-15	Sturle Sunde	NF	no factor from 2^60 to 2^61