Given a positive integer n, return true if n is a prime number, otherwise return false.
Example 1: Input: n = 7 Output: true
Example 2: Input: n = 8 Output: false
Constraints: 1 <= n <= 1000000
Given a positive integer n, return true if n is a prime number, otherwise return false.
Example 1: Input: n = 7 Output: true
Example 2: Input: n = 8 Output: false
Constraints: 1 <= n <= 1000000
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Input 1 (integer)
7
Output 1 (boolean)
true