2 106 617 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
132967885262884169903716583	27	86.8	2021-12-26 20:55:31

ECM

Digits	B1	Curves
25	50000	196 / 280

Estimated T-Level: 23.5 ⓘ

TF below 2^73 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Duncan Booth	537E9D9E030EFD47	0
Verified (Factored)	1999-01-29	Kai-ming Poon	537E9D9E030EFD47	1422165
Verified (Factored)	2018-04-02	kkmrkkblmbrbk	537E9D9E030EFD47	439815

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2021-12-26	SRJ2877	744C9A70B7352306	1	1694175	5	3

History

Date	User	Type	Result
2021-12-28	LOBES	CERT	PRP Certification Proof certified good
2021-12-26	SRJ2877	C-PRP	M2106617/132967885262884169903716583 : 744C9A70B7352306 PRP proof power = 7 PRP: Verified Proof certified good
2021-12-26	Kamil Mudrunka	F-ECM	Factor: 132967885262884169903716583 / (ECM curve 5, B1=50000, B2=5000000, Sigma=3568324867541840)
2021-09-02	TJAOI	NF	no factor from 2^68 to 2^69
2019-05-20	TJAOI	NF	no factor from 2^67 to 2^68
2018-04-02	kkmrkkblmbrbk	C-LL	537E9D9E030EFD47
2017-07-10	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
2016-11-08	Joss	NF-PM1	B1=223608
2016-10-01	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-07-16	Joss	NF-PM1	B1=186340, B2=6020000, E=12
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2015-12-27	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
2012-03-29	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2011-01-24	James Heinrich	NF-PM1	B1=140000, B2=3010000, E=6
2011-01-10	Joss	NF-PM1	B1=50000
2010-12-29	Joss	NF-PM1	B1=30000
2009-08-02	USAFSS	NF-PM1	B1=20000, B2=260000
2009-01-02	Sturle Sunde	NF	no factor from 2^60 to 2^61

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