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A072076
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Largest solution to EulerPhi[x]=10^n.
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3
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2, 22, 250, 3750, 41250, 414150, 4166250, 42281250, 438281250, 4400343750, 44266406250, 449238281250, 4510352343750, 45373066406250, 455545586718750, 4555455867187500, 45555287544813750, 455552875448137500
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,1
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LINKS
| Ray Chandler, Table of n, a(n) for n = 0..1000
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FORMULA
| a(n)=Max{x; A000010[x]=10^n}
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EXAMPLE
| n=3: a(3)=3750 because InvPhi[1000]= {1111,1255,1375,1875,2008,2222,2500,2510,2750,3012,3750}.
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CROSSREFS
| Cf. A000010, A014573, A014197, A110076, A072074, A072075.
Sequence in context: A138140 A151617 A082777 * A036841 A135634 A156505
Adjacent sequences: A072073 A072074 A072075 * A072077 A072078 A072079
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KEYWORD
| nonn,changed
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AUTHOR
| Labos E. (labos(AT)ana.sote.hu), Jun 13 2002
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EXTENSIONS
| More terms from Max Alekseyev (maxale(AT)gmail.com), Apr 26 2010
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