OFFSET
1,1
COMMENTS
A107121 is a subsequence of this sequence (see the comments line of A107121). There is no further term up to 52000000.
a(32) > 7*10^14, if it exists. - Giovanni Resta, Jun 01 2020
EXAMPLE
23695527 is in the sequence because pi(23695527)=prime(2*3*6*9*5*5*2*7).
MATHEMATICA
Do[h = IntegerDigits[m]; l = Length[h]; If[Min[h] > 0 && PrimePi[m] == Prime[Product[h[[k]], {k, l}]], Print[m]], {m, 52000000}]
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Farideh Firoozbakht, May 13 2005
EXTENSIONS
a(23)-a(28) from Donovan Johnson, Jul 12 2010
a(29)-a(31) from Giovanni Resta, Jun 01 2020
STATUS
approved