1 661 029 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
368671971264280903	18	58.4	old
42330500777142192359	20	65.2	2018-01-17 01:34:04

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	107 / 640

Estimated T-Level: 25.8 ⓘ

TF below 2^81 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Wayne Scott	69E76521827AF02B	0
Verified (Factored)	1998-12-06	Bryan Fullerton	69E76521827AF02B	630362

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-02	Oliver Kruse	501BD6BAB80245C2	1	0	1	3
Verified (Factored)	2017-11-02	ATH	501BD6BAB80245C2	1	339416	1	3
Verified	2018-01-21	AdolfNor	A40EE5F0B215EFAF	2	333142	5	3
Verified	2018-01-22	nokno	BCDC88204D7CFB16	2	0	1	3
Verified	2018-01-24	Oliver Kruse	A40EE5F0B215EFAF	2	819524	5	3
Verified	2018-01-26	kkmrkkblmbrbk	BCDC88204D7CFB16	2	89944	1	3

History

Date	User	Type	Result
2018-01-26	kkmrkkblmbrbk	C-PRP	M1661029/368671971264280903/42330500777142192359 : BCDC88204D7CFB16 PRP: Verified PRP without proof (not generated)
2018-01-24	Oliver Kruse	C-PRP	M1661029/368671971264280903/42330500777142192359 : A40EE5F0B215EFAF PRP: Verified PRP without proof (not generated)
2018-01-22	nokno	C-PRP	M1661029/368671971264280903/42330500777142192359 : BCDC88204D7CFB16 PRP: Verified PRP without proof (not generated)
2018-01-21	AdolfNor	C-PRP	M1661029/368671971264280903/42330500777142192359 : A40EE5F0B215EFAF PRP: Verified PRP without proof (not generated)
2018-01-17	Chang Chia-Tche	F-ECM	Factor: 42330500777142192359 / (ECM curve 3, B1=50000, B2=5000000)
2017-11-02	ATH	C-PRP	M1661029/368671971264280903 : 501BD6BAB80245C2 PRP: Verified PRP without proof (not generated)
2017-10-02	Oliver Kruse	C-PRP	M1661029/368671971264280903 : 501BD6BAB80245C2 PRP: Verified PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=500000, B2=15000000, E=12