419 801 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
129209981360185061670894262271	30	96.7	2019-05-03 02:31:21

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	423 / 640

Estimated T-Level: 28.3 ⓘ

TF below 2^89 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		David Slowinski	6D6D	0
Verified (Factored)		Amdahl 6 - 1989	0F6C6D6D	0
Verified (Factored)		Guillermo Ballester Valor	DE2B57298F6C6D6D	0
Verified (Factored)		Eivind Triel	DE2B57298F6C6D6D	175460
Verified (Factored)	2001-12-22	Dennis Pope	DE2B57298F6C6D6D	247995

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2019-05-03	ATH	55534A4E2DD526E0	1	400435	5	3
Verified	2019-05-03	marssystems	55534A4E2DD526E0	1	409257	5	3

History

Date	User	Type	Result
2019-05-03	marssystems	C-PRP	M419801/129209981360185061670894262271 : 55534A4E2DD526E0 PRP: Verified PRP without proof (small exponent)
2019-05-03	ATH	C-PRP	M419801/129209981360185061670894262271 : 55534A4E2DD526E0 PRP: Verified PRP without proof (small exponent)
2019-05-03	alex	F-ECM	Factor: 129209981360185061670894262271 / (ECM curve 173, B1=250000, B2=25000000, Sigma=3052757629654359)
2018-12-06	Gordon Spence	NF	no factor from 2^65 to 2^66
2017-12-18	Gordon Spence	NF	no factor from 2^64 to 2^65
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2015-11-13	Gordon Spence	NF	no factor from 2^63 to 2^64
2015-11-13	Gordon Spence	NF	no factor from 2^62 to 2^63
2015-07-15	NR	NF	no factor from 2^61 to 2^62
2010-06-04	Architects Cubed	NF	no factor from 2^60 to 2^61
2009-08-07	James Hintz	NF-PM1	B1=10000000, B2=250000000, E=12