Is 21 a prime or a composite number?
Is 23 a prime or a composite number?
All prime numbers are odd except .
Determine whether the number 226 is prime, composite, or neither.
Caribou calves weigh about 13 pounds at birth. Is the number 13 a prime or a composite number?
A teacher asked her class to color all the prime numbers between 1 and 10. Here are some of their answers. Which one is correct?
Michael is learning about prime numbers. He knows that 5 is a prime number, because the only factors of 5 are 1 and 5.
Is 9 a prime number? Why?
Benjamin says that 1 is a prime number because it only has 1 factor pair.
Is he correct? Why?
Madison says that every even number is composite because 2 is a factor.
Is she correct? Why?
Isabella bought these four raffle tickets, and one of them was the winning ticket.
The table shows all the factors of some numbers.
|Factor of||1, 101||1, 7, 19, 133||1, 157||1, 5, 29, 145|
Which of the numbers are prime?
Which of the following is a prime number?
Is 96 a prime number?
Are the numbers 37, 97, and 75 prime numbers?
Which of the following is not a prime number?
Find a prime number between 37 and 46.
Look at these numbers.
How many of these numbers are prime?
Which is the largest prime number?
Which is the smallest composite number?
State two prime numbers that are greater than 15 and less than 95.
All odd numbers greater than 7 can be expressed as the sum of three prime numbers. Which three prime numbers have a sum of 97?
Find the smallest prime number that is greater than 40.