1 150 879 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
82027186374570212626846441	26	86.1	2018-09-07 12:10:47
86626201847507033534809799	26	86.2	2015-10-18 07:52:35

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)		David Slowinski	1747	0
Verified (Factored)		Cornelius Caesar	E4B6569C0E8D9747	0
Bad		Morris Thompson	A6EBF531A6E6F8AE	0
Verified (Factored)	2001-01-14	Brian J. Beesley	E4B6569C0E8D9747	258287

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-09-29	Oliver Kruse	4223C662E689BD19	1	0	1	3
Verified (Factored)	2017-10-17	Oliver Kruse	4223C662E689BD19	1	61459	1	3
Verified (Factored)	2018-01-02	ATH	4223C662E689BD19	1	728554	1	3
Verified	2018-09-08	ANONYMOUS	88C18881D6102834	2	569901	5	3
Verified	2018-09-11	Oliver Kruse	88C18881D6102834	2	589237	5	3

P-1 factors

Date	Factor	B1	B2
2015-10-18	86626201847507033534809799	6000000	240000000

History

Date	User	Type	Result
2022-03-07	LordJulius	NF	no factor from 2^58 to 2^60
2018-09-11	Oliver Kruse	C-PRP	M1150879/86626201847507033534809799/82027186374570212626846441 : 88C18881D6102834 PRP: Verified PRP without proof (not generated)
2018-09-08	ANONYMOUS	C-PRP	M1150879/82027186374570212626846441/86626201847507033534809799 : 88C18881D6102834 PRP: Verified PRP without proof (not generated)
2018-09-07	TJAOI	F-ECM	Factor: 82027186374570212626846441 / (ECM curve 67, B1=50000, B2=5000000)
2018-01-02	ATH	C-PRP	M1150879/86626201847507033534809799 : 4223C662E689BD19 PRP: Verified PRP without proof (not generated)
2017-10-17	Oliver Kruse	C-PRP	M1150879/86626201847507033534809799 : 4223C662E689BD19 PRP: Verified PRP without proof (not generated)
2017-09-29	Oliver Kruse	C-PRP	M1150879/86626201847507033534809799 : 4223C662E689BD19 PRP: Verified PRP without proof (not generated)
2015-10-18	mikr	F-PM1	Factor: 86626201847507033534809799 / (P-1, B1=6000000, B2=240000000, E=12)
2015-08-04	omylist	NF	no factor from 2^65 to 2^66
2015-01-10	lycorn	NF	no factor from 2^64 to 2^65
2014-12-28	Matthias Wurtinger	NF	no factor from 2^63 to 2^64
2012-10-07	dbaugh	NF	no factor from 2^62 to 2^63
2012-02-02	markr	NF-PM1	B1=500000, B2=10000000, E=12
2011-05-09	Xyzzy	NF	no factor from 2^61 to 2^62
2009-04-15	Sturle Sunde	NF	no factor from 2^60 to 2^61