1 680 401 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
20874387524810009041	20	64.2	2012-04-01 20:32:05
20220052000816703198473	23	74.1	2012-04-01 20:32:05

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)	1997-11-12	Herb Savage	D582F259E57AB904	0
Verified (Factored)	1998-11-21	Bruce Mitchell	D582F259E57AB904	627737

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-05	Oliver Kruse	C1D17E526801F661	2	0	1	3
Verified	2017-11-10	kkmrkkblmbrbk	C1D17E526801F661	2	1457393	1	3

History

Date	User	Type	Result
2017-11-10	kkmrkkblmbrbk	C-PRP	M1680401/20874387524810009041/20220052000816703198473 : C1D17E526801F661 PRP: Verified PRP without proof (not generated)
2017-10-05	Oliver Kruse	C-PRP	M1680401/20874387524810009041/20220052000816703198473 : C1D17E526801F661 PRP: Verified PRP without proof (not generated)
2017-10-03	Oliver Kruse	C-PRP	M1680401/20874387524810009041/20220052000816703198473 : C1D17E526801F661 PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2012-04-01	Axon	F-ECM	Factor: 422081201236857851987167356025428747394393
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
2011-01-24	Joss	NF-PM1	B1=50000
2010-09-13	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2010-04-25	Architects Cubed	NF	no factor from 2^60 to 2^61

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