2 102 791 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 1 known prime factor. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
170952371357650602049346947913	30	97.1	2022-12-11 08:48:25

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	153 / 640

Estimated T-Level: 26.2 ⓘ

TF below 2^82 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Robert Brodersen	EB9EECF6AF7B4EBF	0
Verified (Factored)	1999-01-29	Joseph Freeland,II	EB9EECF6AF7B4EBF	575545
Verified (Factored)	2018-03-10	gunhed	EB9EECF6AF7B4EBF	1558790

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2022-12-14	/r/counting	818AA1247677F00B	1	1706612	5	3

P-1 factors

Date	Factor	B1	B2
2022-12-11	170952371357650602049346947913	5000000	10035979590

History

Date	User	Type	Result
2022-12-14	TimoS	CERT	PRP Certification Proof certified good
2022-12-14	/r/counting	C-PRP	M2102791/170952371357650602049346947913 : 818AA1247677F00B PRP proof power = 7 PRP: Verified Proof certified good
2022-12-11	Architects Cubed	F-PM1	Factor: 170952371357650602049346947913 / (P-1, B1=5000000, B2=10035979590)
2022-10-26	Architects Cubed	NF	no factor from 2^69 to 2^70
2021-10-09	Numberwang	NF-PM1	B1=3000000, B2=90000000
2021-09-09	TJAOI	NF	no factor from 2^68 to 2^69
2019-05-27	TJAOI	NF	no factor from 2^67 to 2^68
2018-03-10	gunhed	C-LL	EB9EECF6AF7B4EBF
2017-06-28	mikr	NF-PM1	B1=2500000, B2=125000000, E=12
2017-06-09	Joss	NF-PM1	B1=447216, B2=4472160, E=6
2017-05-30	Joss	NF-PM1	B1=372680, B2=3726800, E=6
2016-11-11	Joss	NF-PM1	B1=268329
2016-11-06	Joss	NF-PM1	B1=223608
2016-10-01	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-07-11	Joss	NF-PM1	B1=186340, B2=5950000, E=12
2016-02-23	Mark Rose	NF	no factor from 2^1 to 2^60
2015-12-23	ramgeis	NF	no factor from 2^65 to 2^66
2015-03-15	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-03-15	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-09-04	ramgeis	NF	no factor from 2^62 to 2^63
2012-03-28	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2011-01-24	James Heinrich	NF-PM1	B1=140000, B2=2975000, E=6
2011-01-10	Joss	NF-PM1	B1=50000
2010-12-29	Joss	NF-PM1	B1=30000
2009-08-01	USAFSS	NF-PM1	B1=20000, B2=260000
2009-01-03	Sturle Sunde	NF	no factor from 2^60 to 2^61

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