1 162 969 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
3394723947974222217183745578673	31	101.4	2018-01-28 18:48:34

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)		Len Ruth	3136374AF8639576	0
Verified (Factored)		Simon Burge	3136374AF8639576	0
Verified (Factored)	2004-08-20	Brian J. Beesley	3136374AF8639576	312077
Verified (Factored)	2016-06-01	MadPoo	3136374AF8639576	1052279

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2018-01-30	trebor	8C176206F40F9812	1	299003	5	3
Verified	2018-01-31	Oliver Kruse	8C176206F40F9812	1	1116716	5	3

P-1 factors

Date	Factor	B1	B2
2018-01-28	3394723947974222217183745578673	15000000	500000000

History

Date	User	Type	Result
2018-01-31	Oliver Kruse	C-PRP	M1162969/3394723947974222217183745578673 : 8C176206F40F9812 PRP: Verified PRP without proof (not generated)
2018-01-30	trebor	C-PRP	M1162969/3394723947974222217183745578673 : 8C176206F40F9812 PRP: Verified PRP without proof (not generated)
2018-01-28	mikr	F-PM1	Factor: 3394723947974222217183745578673 / (P-1, B1=15000000, B2=500000000, E=12)
2016-07-27	Bruno Victal	NF-PM1	B1=2500000, B2=62500000, E=12
2016-07-26	Bruno Victal	NF-PM1	B1=2500000, B2=62500000, E=12
2016-06-01	MadPoo	C-LL	3136374AF8639576
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2015-09-17	omylist	NF	no factor from 2^65 to 2^66
2015-01-03	lycorn	NF	no factor from 2^64 to 2^65
2014-12-31	Matthias Wurtinger	NF	no factor from 2^63 to 2^64
2013-10-07	David Campeau	NF-PM1	B1=1215000, B2=35235000, E=12
2012-10-11	dbaugh	NF	no factor from 2^62 to 2^63
2011-05-09	Xyzzy	NF	no factor from 2^61 to 2^62
2009-02-18	Sturle Sunde	NF	no factor from 2^60 to 2^61