What is the next prime after 11?

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Multiple Choice

What is the next prime after 11?

Explanation:
Primes have only two divisors: 1 and the number itself. To find the next prime after 11, check the numbers that come after it: 12, 13, 14, and so on, stopping at the first that has no divisors other than 1 and itself. The number after 11 is 12, which is divisible by 2 (and 3), so it’s not prime. The next one, 13, isn’t divisible by 2 or 3 (you only need to test up to the square root of 13), so it has no other divisors and is prime. Since there are no primes between 11 and 13, the next prime after 11 is 13.

Primes have only two divisors: 1 and the number itself. To find the next prime after 11, check the numbers that come after it: 12, 13, 14, and so on, stopping at the first that has no divisors other than 1 and itself. The number after 11 is 12, which is divisible by 2 (and 3), so it’s not prime. The next one, 13, isn’t divisible by 2 or 3 (you only need to test up to the square root of 13), so it has no other divisors and is prime. Since there are no primes between 11 and 13, the next prime after 11 is 13.

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