Prime and Composite
What is the smallest prime number?
2
What are the prime factors of 28?
2 and 7
What is the product of the smallest two-digit prime number and the largest single-digit prime number?
11 * 7 = 77
Find the smallest prime number that is greater than 50.
53
I am a three-digit number. I am prime, and the sum of my digits is 10. What number am I?
109 or 307