OFFSET
1,2
COMMENTS
What is the smallest number in this sequence divisible by 27?
EXAMPLE
Term after 720 is 3600 because 720 is a 5-smooth number divisible by all 5-smooth numbers less than 25, and LCM of 720 and 25 is 3600.Term after 3600 is 5040 because 3600 is a 5-smooth number; divisible by all 5-smooth numbers less than 27, and LCM of 3600 and 27 is 10800, but 10800 has 60 divisors and smallest number with 60 divisors is 5040.
CROSSREFS
KEYWORD
nonn
AUTHOR
J. Lowell, Feb 14 2013
STATUS
approved