4 999 201 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
130844386059276234791	21	66.8	2014-05-06 03:42:46

ECM

Digits	B1	Curves
25	50000	4 / 280

Estimated T-Level: 20.1 ⓘ

TF below 2^62 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Alan Law	97CB8A4DD467034C	0
Verified (Factored)	2000-08-10	Marek Chmielewski	97CB8A4DD467034C	510149

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-20	kkmrkkblmbrbk	6261DF29BBA3369F	1	0	1	3
Verified	2018-04-24	Ducho_YYZ	6261DF29BBA3369F	1	2847597	1	3

History

Date	User	Type	Result
2023-07-11	USAFSS	NF-PM1	B1=384000, B2=227276910
2018-04-24	Ducho_YYZ	C-PRP	M4999201/130844386059276234791 : 6261DF29BBA3369F PRP: Verified PRP without proof (not generated)
2017-09-20	kkmrkkblmbrbk	C-PRP	M4999201/130844386059276234791 : 6261DF29BBA3369F PRP: Verified PRP without proof (not generated)
2014-05-06	Sid & Andy	F-ECM	Factor: 130844386059276234791
2011-12-09	Squeeky_Squirrel	NF-PM1	B1=120000, B2=2430000, E=6
2011-08-27	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2011-07-10	Squeeky_Squirrel	NF-PM1	B1=60000, B2=990000, E=6
2009-08-20	Carsten Kossendey	NF-PM1	B1=25000, B2=362500
2008-09-02	Sturle Sunde	NF	no factor from 2^61 to 2^62