243 613 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

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

Factored

Factor	Digits	Bits	Date
775024751849631786432470413478294362535041	42	139.2	2024-02-24 13:05:49

ECM

Estimated T-Level: 31.8 ⓘ

TF below 2^101 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		David Slowinski	2342	0
Verified (Factored)		Unknown	2342	0
Verified (Factored)		Ken Kiefer	268B880F9E7E2342	0
Verified (Factored)		Brian J. Beesley	268B880F9E7E2342	0
Verified (Factored)		Eivind Triel	268B880F9E7E2342	201327
Verified (Factored)	2016-06-01	MadPoo	268B880F9E7E2342	106051

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2024-02-24	lycorn	214A104888A23F82	1	76535	5	3

History

Date	User	Type	Result
2024-02-24	Perig	CERT	PRP Certification Proof certified good
2024-02-24	lycorn	C-PRP	M243613/775024751849631786432470413478294362535041 : 214A104888A23F82 PRP proof power = 5 PRP: Verified Proof certified good
2024-02-24	lycorn	F-ECM	Factor: 775024751849631786432470413478294362535041 / (ECM curve 116, B1=1100000, B2=11486399925, Sigma=6308131252250984)
2023-02-11	masser	NF-PP1	Start=6/5, B1=30000000, B2=990000000
2023-02-05	masser	NF-PP1	Start=2/7, B1=30000000, B2=990000000
2023-02-05	masser	NF-PP1	Start=96/53, B1=30000000, B2=960000000
2022-06-02	Sid & Andy	NF-PM1	B1=123000000, B2=5060048003010
2022-03-07	LordJulius	NF	no factor from 2^54 to 2^55
2019-12-30	Gordon Spence	NF	no factor from 2^65 to 2^66
2019-05-11	alex	NF-PM1	B1=100000000, B2=2000000000, E=12
2018-03-11	Gordon Spence	NF	no factor from 2^64 to 2^65
2016-06-01	MadPoo	C-LL	268B880F9E7E2342
2016-02-23	Mark Rose	NF	no factor from 2^57 to 2^58
2016-01-20	Gordon Spence	NF	no factor from 2^63 to 2^64
2016-01-20	Gordon Spence	NF	no factor from 2^62 to 2^63
2015-08-03	snme2pm1	NF	no factor from 2^61 to 2^62
2012-08-11	Richard B. Woods	NF	no factor from 2^60 to 2^61
2009-12-17	alpertron	NF-PM1	B1=50000000, B2=1000000000, E=12
2009-01-29	Sturle Sunde	NF	no factor from 2^59 to 2^60
2009-01-01	Sturle Sunde	NF	no factor from 2^58 to 2^59

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