121 447 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
77726081	8	26.2	old
2182912203573433735341647263	28	90.8	2018-11-28 03:55:08
2468810011391539449225493033081	31	101.0	2019-02-20 20:51:17

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	640 / 640
35	1000000	227 / 1566

Estimated T-Level: 30.7 ⓘ

TF below 2^97 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-09-21	Oliver Kruse	25D9D9727D52311E	1	0	1	3
Verified (Factored)	2017-09-22	Oliver Kruse	25D9D9727D52311E	1	0	1	3
Verified (Factored)	2017-11-06	kkmrkkblmbrbk	25D9D9727D52311E	1	284	1	3
Verified (Factored)	2018-11-28	rucio	C68208178B2D7E07	2	100841	5	3
Verified (Factored)	2018-11-29	Oliver Kruse	C68208178B2D7E07	2	58298	5	3
Verified	2019-02-21	alex	C68208178B2D7E07	3	89801	5	3
Verified	2019-02-21	artorollo	C68208178B2D7E07	3	55653	5	3

History

Date	User	Type	Result
2019-02-21	artorollo	C-PRP	M121447/77726081/2182912203573433735341647263/2468810011391539449225493033081 : C68208178B2D7E07 PRP: Verified PRP without proof (small exponent)
2019-02-21	alex	C-PRP	M121447/77726081/2182912203573433735341647263/2468810011391539449225493033081 : C68208178B2D7E07 PRP: Verified PRP without proof (small exponent)
2019-02-20	Niels_Mache_Nextcloud	F-ECM	Factor: 2468810011391539449225493033081 / (ECM curve 2, B1=250000, B2=25000000)
2018-11-29	Oliver Kruse	C-PRP	M121447/77726081/2182912203573433735341647263 : C68208178B2D7E07 PRP: Verified PRP without proof (small exponent)
2018-11-28	rucio	C-PRP	M121447/77726081/2182912203573433735341647263 : C68208178B2D7E07 PRP: Verified PRP without proof (small exponent)
2018-11-28	Niels_Mache_Nextcloud	F-ECM	Factor: 2182912203573433735341647263 / (ECM curve 2, B1=250000, B2=25000000)
2017-11-06	kkmrkkblmbrbk	C-PRP	M121447/77726081 : 25D9D9727D52311E PRP: Verified PRP without proof (small exponent)
2017-09-22	Oliver Kruse	C-PRP	M121447/77726081 : 25D9D9727D52311E PRP: Verified PRP without proof (not generated)
2017-09-21	Oliver Kruse	C-PRP	M121447/77726081 : 25D9D9727D52311E PRP: Verified PRP without proof (not generated)
2017-09-21	Oliver Kruse	C-PRP	M121447/77726081 : 25D9D9727D52311E PRP without proof (not generated)
2017-02-23	kkmrkkblmbrbk	NF-PM1	B1=100000000, B2=2000000000, E=12