5 551 831 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
1008483713658113435688656993	28	89.7	2021-10-30 23:22:52

ECM

Digits	B1	Curves
25	50000	13 / 280

Estimated T-Level: 20.2 ⓘ

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

Status	Date	User	Residue	Shift
Verified (Factored)		David Baugh	D96AD1E01216CB56	0
Verified (Factored)	2001-01-21	Gregor Schwan	D96AD1E01216CB56	5444104

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2021-11-05	LaurV	272E2C257E5467CB	1	2960656	5	3

P-1 factors

Date	Factor	B1	B2
2021-10-30	1008483713658113435688656993	5000000	405000000

History

Date	User	Type	Result
2021-11-05	Ben Delo	CERT	PRP Certification Proof certified good
2021-11-05	LaurV	C-PRP	M5551831/1008483713658113435688656993 : 272E2C257E5467CB PRP proof power = 7 PRP: Verified Proof certified good
2021-10-30	Architects Cubed	F-PM1	Factor: 1008483713658113435688656993 / (P-1, B1=5000000, B2=405000000)
2016-02-23	Mark Rose	NF	no factor from 2^1 to 2^62
2013-10-17	dbaugh	NF	no factor from 2^74 to 2^75
2013-09-09	dbaugh	NF	no factor from 2^73 to 2^74
2013-05-19	Squeeky_Squirrel	NF-PM1	B1=175000, B2=3937500, E=6
2013-05-06	dbaugh	NF	no factor from 2^72 to 2^73
2013-03-16	dbaugh	NF	no factor from 2^71 to 2^72
2012-11-27	dbaugh	NF	no factor from 2^70 to 2^71
2012-09-26	dbaugh	NF	no factor from 2^69 to 2^70
2012-08-15	dbaugh	NF	no factor from 2^68 to 2^69
2012-08-12	dbaugh	NF	no factor from 2^67 to 2^68
2012-07-11	dbaugh	NF	no factor from 2^66 to 2^67
2012-07-11	dbaugh	NF	no factor from 2^65 to 2^66
2012-07-07	dbaugh	NF	no factor from 2^64 to 2^65
2012-06-27	dbaugh	NF	no factor from 2^63 to 2^64
2010-11-25	Squeeky_Squirrel	NF-PM1	B1=65000, B2=1121250, E=6
2009-06-06	Carsten Kossendey	NF-PM1	B1=25000, B2=356250
2009-02-11	GrunwalderGIMP	NF	no factor from 2^62 to 2^63

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