1 646 261 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
55091788930073908928543	23	75.5	2012-02-13 10:10:27

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)		David Fred	75574C87C9735685	0
Verified (Factored)	1998-11-28	Paul Victor Novarese	75574C87C9735685	500644

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-02	Oliver Kruse	E902CC0369FE8A50	1	0	1	3
Verified	2017-11-02	Chang Chia-Tche	E902CC0369FE8A50	1	727706	1	3

History

Date	User	Type	Result
2017-11-02	Chang Chia-Tche	C-PRP	M1646261/55091788930073908928543 : E902CC0369FE8A50 PRP: Verified PRP without proof (not generated)
2017-10-02	Oliver Kruse	C-PRP	M1646261/55091788930073908928543 : E902CC0369FE8A50 PRP: Verified PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2012-02-13	Axon	F-ECM	Factor: 55091788930073908928543
2012-02-13	Axon	NF-PM1	B1=1000000, B2=40000000, E=12
2012-02-13	Axon	NF-PM1	B1=1000000, B2=32000000, E=12
2012-02-13	Axon	NF-PM1	B1=1000000, B2=24000000, E=12
2012-02-13	Axon	NF-PM1	B1=1000000, B2=16000000, E=12
2012-02-13	Axon	NF-PM1	B1=1000000
2012-02-13	Axon	NF-PM1	B1=900000
2012-02-13	Axon	NF-PM1	B1=800000
2012-02-13	Axon	NF-PM1	B1=700000
2012-02-13	Axon	NF-PM1	B1=600000
2012-02-13	Axon	NF-PM1	B1=500000
2012-02-13	Axon	NF-PM1	B1=400000
2012-02-13	Axon	NF-PM1	B1=300000
2012-02-13	Axon	NF-PM1	B1=200000
2012-02-13	Axon	NF-PM1	B1=100000
2010-08-03	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2010-04-29	Architects Cubed	NF	no factor from 2^60 to 2^61

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