A095824 - OEIS

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A095824

Numbers k such that k + largest digit of k is prime.

1, 10, 21, 43, 54, 61, 65, 72, 76, 81, 92, 94, 98, 100, 152, 161, 172, 174, 183, 185, 190, 221, 230, 252, 263, 265, 270, 274, 276, 285, 298, 310, 343, 354, 361, 372, 376, 381, 392, 452, 461, 472, 483, 490, 494, 504, 542, 552, 563, 565, 570, 585, 590, 592, 598

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OFFSET

1,2

LINKS

Table of n, a(n) for n=1..55.

FORMULA

a(n) ~ n log n. - Charles R Greathouse IV, Jun 13 2017

EXAMPLE

54 is a term because 54 + 5 = 59, a prime.

MATHEMATICA

Select[Range[600], PrimeQ[#+Max[IntegerDigits[#]]]&] (* Harvey P. Dale, May 19 2016 *)

PROG