A201054 Composite numbers whose product of digits is 5.
15, 51, 115, 511, 1115, 5111, 11115, 11151, 11511, 15111, 51111, 111115, 111151, 111511, 115111, 151111, 1111115, 1111511, 1115111, 1151111, 1511111, 5111111, 11111115, 11111151, 11111511, 11115111, 11151111, 11511111, 15111111, 51111111, 111111115, 111111151
Offset: 1
Examples
Number 115 is in sequence because 1*1*5=5.
Links
- Robert Israel, Table of n, a(n) for n = 1..10000
Crossrefs
Programs
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Maple
remove(isprime,[seq(seq((10^m-1)/9 + 4*10^j,j=0..m-1),m=1..10)]); # Robert Israel, Jan 03 2017
Comments