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

Author

Jaroslav Krizek, Nov 26 2011

Keywords

• nonn
• base

Comments

Complement of A107691 with respect to A199985. Subsequence of A201018 (composite numbers whose multiplicative digital root is 5).

Examples

			Number 115 is in sequence because 1*1*5=5.
		

Links

• Robert Israel, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A107691 (primes whose product of digits is 5), A199985 (numbers whose product of digits is 5).

Programs

Maple

remove(isprime,[seq(seq((10^m-1)/9 + 4*10^j,j=0..m-1),m=1..10)]); # Robert Israel, Jan 03 2017