Which is a prime number 14,13,21,33
Mathematics · High School · Thu Feb 04 2021
Answered on
Given the numbers:
14
13
21
33
Determine which number is prime.
Solution:
In order to determine which number is prime, we simply need to list the factors of the number. Prime numbers only have 2 factors, whereas composite numbers have more than 1 factors.
Factors of 14:
1, 2, 7, and 14
Composite
Factors of 13:
1 and 13
Prime
Factors of 21
1, 3, 7, and 21
Composite
Factors of 33:
1, 3, 11 and 33
Composite
Final answer:
13