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Search: id:A095411
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| A095411 |
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Numbers n such that total number of decimal digits of all distinct prime factors of n is smaller than the number of digits of n. |
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+0
3
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| 6, 22, 26, 30, 33, 34, 38, 39, 42, 44, 46, 51, 52, 55, 57, 58, 60, 62, 65, 66, 68, 69, 70, 74, 76, 77, 78, 82, 84, 85, 86, 87, 88, 90, 91, 92, 93, 94, 95, 99, 102, 110, 114, 130, 132, 138, 143, 154, 156, 165, 170, 174, 182, 186, 187, 190, 195, 198, 202, 204, 206, 209
(list; graph; listen)
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OFFSET
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1,1
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FORMULA
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Solutions to A095407[x]<A055642[x].
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EXAMPLE
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n=55: 2 digits, prime set={5,11} with {5,1,1} digits, 3>2, 55 is here.
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MATHEMATICA
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ffi[x_] :=Flatten[FactorInteger[x]] lf[x_] :=Length[FactorInteger[x]] ba[x_] :=Table[Part[ffi[x], 2*j-1], {j, 1, lf[x]}] tdp[x_] :=Flatten[Table[IntegerDigits[Part[ba[x], j]], {j, 1, lf[x]}], 1] pl[x_] :=Length[tdp[x]] nl[x_] :=Length[IntegerDigits[x]] t1=Table[nl[w], {w, 1, 1000}]; t2=Table[pl[w], {w, 1, 1000}]; t2-t1 Flatten[Position[t2-t1, 1]]
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CROSSREFS
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Cf. A055642, A095407, A095408, A095409, A095410.
Sequence in context: A044067 A106685 A078118 this_sequence A044448 A111036 A055709
Adjacent sequences: A095408 A095409 A095410 this_sequence A095412 A095413 A095414
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KEYWORD
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base,nonn
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AUTHOR
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Labos E. (labos(AT)ana.sote.hu), Jun 21 2004
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