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 A164324 Numbers n such that n=prime(P)+pi(P), where P is product of digits of n. 2
 16, 53, 185, 238, 2495, 19775, 4878937 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS The product of the digits of next term (if it exists) is greater than 3*10^8. a(8) > 10^12, if it exists. - Chai Wah Wu, Apr 24 2018 LINKS EXAMPLE 16 = prime(1*6) + pi(1*6), so 16 is in the sequence. 4878937 = prime(4*8*7*8*9*3*7) + pi(4*8*7*8*9*3*7), so 4878937 is in the sequence. MATHEMATICA Do[If[n=Prime[m]+PrimePi[m]; m==Apply[Times, IntegerDigits[n]], Print[n]], {m, 300000000}] CROSSREFS Cf. A000040, A000720, A164322, A164323. Sequence in context: A087973 A117273 A137515 * A197246 A187104 A137741 Adjacent sequences:  A164321 A164322 A164323 * A164325 A164326 A164327 KEYWORD base,more,nonn AUTHOR Farideh Firoozbakht, Aug 13 2009 STATUS approved

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Last modified May 21 18:58 EDT 2019. Contains 323444 sequences. (Running on oeis4.)