1 825 781 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
1056901939637146327007	22	69.8	2020-06-16 06:55:11
2811454102827449665559	22	71.3	2011-03-06 22:36:37

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	106 / 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)		Ken Kriesel	F50FBB1B5FD6A1BB	0
Verified (Factored)	1998-12-06	The Prime Hunters	F50FBB1B5FD6A1BB	1413343

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-04	Oliver Kruse	FAD08C7138FF0F32	1	0	1	3
Verified (Factored)	2017-11-06	kkmrkkblmbrbk	FAD08C7138FF0F32	1	1245302	1	3
Verified	2020-06-17	M Miller	95B0467285181834	2	314896	5	3
Verified	2020-06-17	ATH	95B0467285181834	2	1734021	5	3

History

Date	User	Type	Result
2022-03-09	LordJulius	NF	no factor from 2^1 to 2^60
2022-03-08	LordJulius	NF	no factor from 2^58 to 2^60
2020-06-17	ATH	C-PRP	M1825781/2811454102827449665559/1056901939637146327007 : 95B0467285181834 PRP: Verified PRP without proof (not generated)
2020-06-17	M Miller	C-PRP	M1825781/1056901939637146327007/2811454102827449665559 : 95B0467285181834 PRP: Verified PRP without proof (not generated)
2020-06-16	nordi	F-ECM	Factor: 1056901939637146327007 / (ECM curve 3, B1=50000, B2=5000000, Sigma=7165436259251224)
2017-11-06	kkmrkkblmbrbk	C-PRP	M1825781/2811454102827449665559 : FAD08C7138FF0F32 PRP: Verified PRP without proof (not generated)
2017-10-04	Oliver Kruse	C-PRP	M1825781/2811454102827449665559 : FAD08C7138FF0F32 PRP: Verified PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2011-03-06	Lupo	F-ECM	Factor: 2811454102827449665559
2010-04-10	Architects Cubed	NF	no factor from 2^60 to 2^61