1 687 729 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
72432107366777357512321	23	75.9	2014-08-26 20:29:15

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	107 / 640

Estimated T-Level: 25.8 ⓘ

TF below 2^81 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Dave Wilson	4D571E5185A3B75D	0
Verified (Factored)	1998-11-21	Dan Kruger	4D571E5185A3B75D	326349

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-03	Oliver Kruse	E70EB8DD90E45680	1	0	1	3
Verified	2017-11-03	Chang Chia-Tche	E70EB8DD90E45680	1	489437	1	3

History

Date	User	Type	Result
2022-03-08	LordJulius	NF	no factor from 2^58 to 2^60
2017-11-03	Chang Chia-Tche	C-PRP	M1687729/72432107366777357512321 : E70EB8DD90E45680 PRP: Verified PRP without proof (not generated)
2017-10-03	Oliver Kruse	C-PRP	M1687729/72432107366777357512321 : E70EB8DD90E45680 PRP: Verified PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2014-08-26	Chang Chia-Tche	F-ECM	Factor: 72432107366777357512321 / (ECM curve 1, B1=50000, B2=5000000)
2012-03-01	Axon	NF-PM1	B1=1000000, B2=20000000, E=12
2012-03-01	Axon	NF-PM1	B1=1000000, B2=8000000, E=12
2012-02-29	Axon	NF-PM1	B1=1000000
2012-02-29	Axon	NF-PM1	B1=900000
2012-02-29	Axon	NF-PM1	B1=800000
2012-02-29	Axon	NF-PM1	B1=700000
2012-02-29	Axon	NF-PM1	B1=600000
2012-02-29	Axon	NF-PM1	B1=500000
2012-02-29	Axon	NF-PM1	B1=400000
2012-02-29	Axon	NF-PM1	B1=300000
2012-02-29	Axon	NF-PM1	B1=200000
2012-02-29	Axon	NF-PM1	B1=100000
2011-01-25	Joss	NF-PM1	B1=50000
2010-09-26	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2010-04-26	Architects Cubed	NF	no factor from 2^60 to 2^61

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