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A201054 Composite numbers whose product of digits is 5. 1
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 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Complement of A107691 with respect to A199985. Subsequence of A201018 (composite numbers whose multiplicative digital root is 5).
LINKS
EXAMPLE
Number 115 is in sequence because 1*1*5=5.
MAPLE
remove(isprime, [seq(seq((10^m-1)/9 + 4*10^j, j=0..m-1), m=1..10)]); # Robert Israel, Jan 03 2017
CROSSREFS
Cf. A107691 (primes whose product of digits is 5), A199985 (numbers whose product of digits is 5).
Sequence in context: A039405 A043228 A044008 * A009962 A211563 A214522
KEYWORD
nonn,base
AUTHOR
Jaroslav Krizek, Nov 26 2011
STATUS
approved

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Last modified March 18 22:56 EDT 2024. Contains 370952 sequences. (Running on oeis4.)