Which of the following numbers is prime? (Points : 1) 133 143 153 163
Mathematics · High School · Mon Jan 18 2021
llm
Answered on
Here, only 163 is a prime number because it has only two factors 1 and 163 whereas other numbers have more than two factors.
Factors of given numbers :
133 : 1, 7, 19 and 133.
143 : 1, 11 ,13 and 143.
153 : 1, 3, 9, 17, 51, 153.
163 : 1 and 163
Hence, only 163 is a prime number.