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A107120
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Numbers n such that pi(n)=prime(d_1*d_2*...*d_k) where d_1 d_2 ... d_k is the decimal expansion of n.
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2
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162, 242, 291, 371, 461, 515, 2419, 2815, 11874, 64751, 81927, 264961, 276184, 757155, 2537825, 7717729, 9548491, 14738827, 19728438, 19728446, 19728464, 23695527, 77362954, 269776516, 269776523, 269776532, 358399327, 2385883646, 59955748691, 67893872935, 848472784869
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OFFSET
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1,1
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COMMENTS
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A107121 is a subsequence of this sequence (see the comments line of A107121). There is no further term up to 52000000.
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LINKS
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EXAMPLE
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23695527 is in the sequence because pi(23695527)=prime(2*3*6*9*5*5*2*7).
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MATHEMATICA
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Do[h = IntegerDigits[m]; l = Length[h]; If[Min[h] > 0 && PrimePi[m] == Prime[Product[h[[k]], {k, l}]], Print[m]], {m, 52000000}]
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CROSSREFS
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KEYWORD
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nonn,base
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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