2 776 091 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

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

Factored

Factor	Digits	Bits	Date
942715877875552159257119	24	79.6	2020-08-09 11:31:28

ECM

Digits	B1	Curves
25	50000	31 / 280

Estimated T-Level: 20.6 ⓘ

TF below 2^63 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Andre Nouws	47355C9134E2C60B	0
Verified (Factored)	1999-09-07	Chi-leung Chan	47355C9134E2C60B	474558
Verified (Factored)	2018-08-24	kkmrkkblmbrbk	47355C9134E2C60B	1825354

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2020-08-09	M Miller	FEA026F2C03A690B	1	1048266	5	3

History

Date	User	Type	Result
2020-08-10	Architects Cubed	CERT	PRP Certification Proof certified good
2020-08-09	M Miller	C-PRP	M2776091/942715877875552159257119 : FEA026F2C03A690B PRP proof power = 7 PRP: Verified Proof certified good
2020-08-09	Sergey Nosov	F-ECM	Factor: 942715877875552159257119 / (ECM curve 1, B1=50000, B2=5000000)
2019-02-24	chuenkit	NF	no factor from 2^67 to 2^68
2018-08-24	kkmrkkblmbrbk	C-LL	47355C9134E2C60B
2017-10-12	Gordon Spence	NF	no factor from 2^66 to 2^67
2017-03-14	mikr	NF-PM1	B1=2700000, B2=84000000, E=12
2017-03-07	Joss	NF-PM1	B1=315187, B2=3151870, E=6
2017-01-10	Joss	NF-PM1	B1=262656
2017-01-10	Joss	NF-PM1	B1=218880
2016-12-18	Joss	NF-PM1	B1=182400
2016-08-06	Joss	NF-PM1	B1=152000, B2=4785000, E=6
2016-02-23	Mark Rose	NF	no factor from 2^1 to 2^60
2015-12-10	omylist	NF	no factor from 2^65 to 2^66
2015-04-21	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-04-21	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-01-10	dbaugh	NF	no factor from 2^62 to 2^63
2012-03-26	Grant McCracken	NF	no factor from 2^61 to 2^62
2010-11-28	markr	NF-PM1	B1=110000, B2=2392500, E=6
2010-11-10	Joss	NF-PM1	B1=15000
2009-01-28	Sturle Sunde	NF	no factor from 2^60 to 2^61

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