3,9,27,81,243,729
Prime numbers have one distinct prime factor.
3, 9, 27, 81, 243, 729
3, 9, 27, 81, 243, and 729.
3, 9, 27, 81, 243, 729
3,9,27,81,243,729
Since all numbers have one as a factor, there is no number with three as its only factor.
Prime numbers.
Prime numbers have one distinct prime factor.
3, 9, 27, 81, 243, 729
That's an infinite list, started by 1024
Since prime numbers only have one prime factor (themselves), factor trees are unnecessary.
3, 9, 27, 81, 243, 729
3, 9, 27, 81, 243, and 729.
3, 9, 27, 81, 243, 729
1. As long as there are two prime numbers in a set, the only common factor for the set will be 1.
Squares (or cubes or more) of prime numbers have one distinct prime factor, but if you're counting them individually, all composite numbers have at least two prime factors.