A140174 Numbers n such that n=pi(n)*sum of the digits of n.

0, 2, 30, 1122, 24300

Offset

1,2

Comments

This sequence is a subsequence of A057809. There is no further term up to 16*10^6.

a(6) > 1.4*10^22, if it exists. - Giovanni Resta, Aug 31 2018

Links

Table of n, a(n) for n=1..5.

Example

24300=pi(24300)*(2+4+3+0+0).

Mathematica

Select[Range[0, 25000], PrimePi[#]Total[IntegerDigits[#]]==#&] (* Harvey P. Dale, Feb 13 2023 *)

Crossrefs

Cf. A057809, A140173.

Sequence in context: A322624 A338044 A350719 * A246741 A089016 A364504

Adjacent sequences: A140171 A140172 A140173 * A140175 A140176 A140177

Keyword

base,more,nonn

Author

Farideh Firoozbakht, May 15 2008

Status

approved