384 641 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
2177996558195100076237795068569	31	100.8	2019-04-11 18:42:47

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	330 / 640

Estimated T-Level: 27.6 ⓘ

TF below 2^87 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		David Slowinski	717D	0
Verified (Factored)		Brian J. Beesley	E7D2B9567879717D	0
Verified (Factored)		Marc Honey	E7D2B9567879717D	0
Verified (Factored)		Eivind Triel	E7D2B9567879717D	192077
Verified (Factored)	2016-06-01	MadPoo	E7D2B9567879717D	108831

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2019-04-12	matzetoni	45E57CA79645B146	1	135900	5	3
Verified	2019-04-19	zhongnianren1980	45E57CA79645B146	1	131991	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	M384641/2177996558195100076237795068569 : 45E57CA79645B146 PRP: Verified PRP without proof (small exponent)
2019-04-12	matzetoni	C-PRP	M384641/2177996558195100076237795068569 : 45E57CA79645B146 PRP: Verified PRP without proof (small exponent)
2019-04-11	alex	F-ECM	Factor: 2177996558195100076237795068569 / (ECM curve 80, B1=250000, B2=25000000, Sigma=5892114735868645)
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	E7D2B9567879717D
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
2012-08-01	alpertron	NF-PM1	B1=10000000, B2=200000000, E=12
2011-11-18	lycorn	NF	no factor from 2^60 to 2^61
2009-01-10	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