523 801 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
598742556914723323903951729	27	89.0	2020-03-06 07:16:46

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	365 / 640

Estimated T-Level: 27.9 ⓘ

TF below 2^88 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		David Slowinski	894	0
Verified (Factored)		Robert R. Fenichel	8BD713D3666DC894	0
Verified (Factored)		Matt Horbal	8BD713D3666DC894	0
Verified (Factored)	2015-04-11	MadPoo	8BD713D3666DC894	487035

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2020-03-06	Niels_Mache_Nextcloud	D6B2A09D3F2FFB01	1	512525	5	3
Verified	2020-03-06	ATH	D6B2A09D3F2FFB01	1	117968	5	3

History

Date	User	Type	Result
2022-03-07	LordJulius	NF	no factor from 2^54 to 2^55
2021-06-06	happy5214	NF-PP1	Start=2/7, B1=12500000, B2=1087500000
2020-03-06	ATH	C-PRP	M523801/598742556914723323903951729 : D6B2A09D3F2FFB01 PRP: Verified PRP without proof (small exponent)
2020-03-06	Niels_Mache_Nextcloud	C-PRP	M523801/598742556914723323903951729 : D6B2A09D3F2FFB01 PRP: Verified PRP without proof (small exponent)
2020-03-06	lycorn	F-ECM	Factor: 598742556914723323903951729 / (ECM curve 129, B1=250000, B2=25000000)
2018-05-23	chuenkit	NF	no factor from 2^65 to 2^66
2017-11-10	BloodERazor	NF	no factor from 2^64 to 2^65
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2016-02-23	Mark Rose	NF	no factor from 2^60 to 2^61
2015-09-08	Gordon Spence	NF	no factor from 2^63 to 2^64
2015-09-08	Gordon Spence	NF	no factor from 2^62 to 2^63
2015-07-09	NR	NF	no factor from 2^61 to 2^62
2015-04-11	MadPoo	C-LL	8BD713D3666DC894
2013-01-24	markr	NF-PM1	B1=25000000, B2=1000000000, E=12
2012-07-14	Joss	NF-PM1	B1=1047602
2011-05-27	Joss	NF-PM1	B1=1000000