423 403 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
111305197534491289846893456071	30	96.5	2019-05-05 10:07:50

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	415 / 640

Estimated T-Level: 28.2 ⓘ

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

Status	Date	User	Residue	Shift
Verified (Factored)		David Slowinski	29CD	0
Verified (Factored)		Edu J.M. van Berkel	97BCC1BBC5A829CD	0
Verified (Factored)		Jean-Charles Meyrignac	97BCC1BBC5A829CD	0
Verified (Factored)		Eivind Triel	97BCC1BBC5A829CD	45713
Verified (Factored)	2016-06-01	MadPoo	97BCC1BBC5A829CD	254126

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2019-05-05	ATH	07E30912CFA299E9	1	32010	5	3
Verified	2019-05-06	kkmrkkblmbrbk	07E30912CFA299E9	1	366340	5	3

History

Date	User	Type	Result
2019-05-06	kkmrkkblmbrbk	C-PRP	M423403/111305197534491289846893456071 : 07E30912CFA299E9 PRP: Verified PRP without proof (small exponent)
2019-05-05	ATH	C-PRP	M423403/111305197534491289846893456071 : 07E30912CFA299E9 PRP: Verified PRP without proof (small exponent)
2019-05-05	alex	F-ECM	Factor: 111305197534491289846893456071 / (ECM curve 288, B1=250000, B2=25000000, Sigma=7975722892186150)
2018-12-07	Gordon Spence	NF	no factor from 2^65 to 2^66
2018-11-18	Joss	NF-PM1	B1=13300000
2018-01-07	BloodERazor	NF	no factor from 2^64 to 2^65
2016-06-27	Joss	NF-PM1	B1=13200000, B2=400000000, E=12
2016-06-02	Joss	NF-PM1	B1=13200000, B2=200000000, E=12
2016-06-01	MadPoo	C-LL	97BCC1BBC5A829CD
2016-03-28	Joss	NF-PM1	B1=13200000
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2015-11-14	Gordon Spence	NF	no factor from 2^63 to 2^64
2015-11-14	Gordon Spence	NF	no factor from 2^62 to 2^63
2015-07-15	NR	NF	no factor from 2^61 to 2^62
2012-02-03	lycorn	NF	no factor from 2^60 to 2^61
2012-01-21	lycorn	NF-PM1	B1=10000000, B2=100000000, E=12
2011-08-06	Joss	NF-PM1	B1=1012466
2010-07-26	Rob_Dee	NF-PM1	B1=1000000, B2=2000000, E=6
2010-07-25	Rob_Dee	NF-PM1	B1=500000, B2=1000000