ugly-number


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Points: 1
Time limit: 30.0s
Memory limit: 250M

Problem type
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Python

An ugly number is a positive integer whose prime factors are limited to 2, 3, and 5.

Given an integer n, return true if n is an ugly number.

  Example 1:

Input: n = 6 Output: true Explanation: 6 = 2 × 3

Example 2:

Input: n = 1 Output: true Explanation: 1 has no prime factors, therefore all of its prime factors are limited to 2, 3, and 5.

Example 3:

Input: n = 14 Output: false Explanation: 14 is not ugly since it includes the prime factor 7.

  Constraints:

-2³¹ <= n <= 2³¹ - 1

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