384 299 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
16383787795128321894684495671	29	93.7	2019-04-11 12:01:19

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	479 / 640

Estimated T-Level: 28.7 ⓘ

TF below 2^90 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		David Slowinski	1DF7	0
Verified (Factored)		Brian J. Beesley	19FB5CDE894B9DF7	0
Verified (Factored)		Marc Honey	19FB5CDE894B9DF7	0
Verified (Factored)		Eivind Triel	19FB5CDE894B9DF7	383366
Verified (Factored)	2016-06-01	MadPoo	19FB5CDE894B9DF7	127260

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2019-04-12	matzetoni	04502473B6245408	1	167153	5	3
Verified	2019-04-19	zhongnianren1980	04502473B6245408	1	37875	5	3

History

Date	User	Type	Result
2022-03-07	LordJulius	NF	no factor from 2^54 to 2^55
2019-04-19	zhongnianren1980	C-PRP	M384299/16383787795128321894684495671 : 04502473B6245408 PRP: Verified PRP without proof (small exponent)
2019-04-12	matzetoni	C-PRP	M384299/16383787795128321894684495671 : 04502473B6245408 PRP: Verified PRP without proof (small exponent)
2019-04-11	alex	F-ECM	Factor: 16383787795128321894684495671 / (ECM curve 229, B1=250000, B2=25000000, Sigma=2572196996627836)
2018-02-02	BloodERazor	NF	no factor from 2^64 to 2^65
2017-01-09	mikr	NF-PM1	B1=60000000, B2=3000000000, E=12
2016-06-01	MadPoo	C-LL	19FB5CDE894B9DF7
2015-11-24	Gordon Spence	NF	no factor from 2^63 to 2^64
2015-11-24	Gordon Spence	NF	no factor from 2^62 to 2^63
2015-08-13	NR	NF	no factor from 2^61 to 2^62
2012-07-31	alpertron	NF-PM1	B1=10000000, B2=200000000, E=12
2011-11-18	lycorn	NF	no factor from 2^60 to 2^61
2009-01-09	Sturle Sunde	NF	no factor from 2^59 to 2^60
2009-01-05	Sturle Sunde	NF	no factor from 2^58 to 2^59