4 104 523 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
668330237576669617927	21	69.2	2021-05-23 01:56:22
1186495172195206571430553	25	80.0	2021-08-23 05:01:14

ECM

Digits	B1	Curves
25	50000	57 / 280

Estimated T-Level: 21.0 ⓘ

TF below 2^65 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)	1998-09-27	Gary Hanson	0F86D378042C0E83	0
Verified (Factored)	1999-10-21	Douglas A Jeeves	0F86D378042C0E83	4031478

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2021-05-24	kutens	04C6274C7E7965B8	1	2946274	5	3
Verified	2021-08-23	ATH	04C6274C7E7965B8	2	3431868	5	3

History

Date	User	Type	Result
2021-08-23	curtisc	CERT	PRP Certification Proof certified good
2021-08-23	ATH	C-PRP	M4104523/668330237576669617927/1186495172195206571430553 : 04C6274C7E7965B8 PRP proof power = 7 PRP: Verified Proof certified good
2021-08-23	ATH	F-PP1	Start=2/7, B1=2500000, B2=182500000, Factor: 1186495172195206571430553
2021-05-24	Simon Josefsson	CERT	PRP Certification Proof certified good
2021-05-24	kutens	C-PRP	M4104523/668330237576669617927 : 04C6274C7E7965B8 PRP proof power = 7 PRP: Verified (Factored) Proof certified good
2021-05-23	axn	F	Factor: 668330237576669617927 / TF: 69-70
2021-05-23	axn	NF	no factor from 2^68 to 2^69
2021-04-23	King	NF-PM1	B1=1600000, B2=60000000, E=12
2020-11-24	Carlos Pinho	NF-PM1	B1=151000, B2=3955000, E=6
2018-11-19	Yxinity	NF	no factor from 2^67 to 2^68
2017-12-12	Yxinity	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2015-05-31	snme2pm1	NF	no factor from 2^65 to 2^66
2013-10-24	David Campeau	NF	no factor from 2^64 to 2^65
2013-09-04	Jayder	NF	no factor from 2^63 to 2^64
2013-05-31	Squeeky_Squirrel	NF-PM1	B1=125000, B2=2343750, E=6
2011-07-31	USAFSS	NF-PM1	B1=40000, B2=580000
2011-07-01	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2010-11-23	Grant McCracken	NF	no factor from 2^61 to 2^62
2009-07-24	Carsten Kossendey	NF-PM1	B1=20000, B2=300000

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