1 251 697 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
11434017275069887509073	23	73.3	2013-09-12 20:26:02
5752417761462920888954839	25	82.3	2018-02-02 17:08:59

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	100 / 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)		Robert Clark	808E5E0C19E5CFD4	0
Verified (Factored)		Cornelius Caesar	808E5E0C19E5CFD4	0
Verified (Factored)		Brian J. Beesley	808E5E0C19E5CFD4	864791

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-09-29	Oliver Kruse	D421C86FE92F8790	1	0	1	3
Verified (Factored)	2017-10-20	kkmrkkblmbrbk	D421C86FE92F8790	1	1203492	1	3
Verified	2018-02-02	MaximeG	DAEB52242596953E	2	574600	5	3
Verified	2018-02-09	Oliver Kruse	DAEB52242596953E	2	291835	5	3

History

Date	User	Type	Result
2022-03-07	LordJulius	NF	no factor from 2^58 to 2^60
2018-02-09	Oliver Kruse	C-PRP	M1251697/11434017275069887509073/5752417761462920888954839 : DAEB52242596953E PRP: Verified PRP without proof (not generated)
2018-02-02	MaximeG	C-PRP	M1251697/11434017275069887509073/5752417761462920888954839 : DAEB52242596953E PRP: Verified PRP without proof (not generated)
2018-02-02	TJAOI	F-ECM	Factor: 5752417761462920888954839 / (ECM curve 44, B1=50000, B2=5000000)
2017-10-20	kkmrkkblmbrbk	C-PRP	M1251697/11434017275069887509073 : D421C86FE92F8790 PRP: Verified PRP without proof (not generated)
2017-09-29	Oliver Kruse	C-PRP	M1251697/11434017275069887509073 : D421C86FE92F8790 PRP: Verified PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=300000, B2=10000000, E=12
2013-09-12	jim f in mn	F-ECM	Factor: 11434017275069887509073
2012-10-07	dbaugh	NF	no factor from 2^62 to 2^63
2011-05-09	Xyzzy	NF	no factor from 2^61 to 2^62
2009-02-17	Sturle Sunde	NF	no factor from 2^60 to 2^61