answersLogoWhite

0

A Prime number is any integer evenly divisible by only itself, and the number 1. Since 21 is divisible by 3 and 7, it is a composite number, not a prime number.

No, 21 is not a prime number.

21 is divisible by 1, 3, 7, & 21


No. 21=3*7
User Avatar

Wiki User

12y ago

Still curious? Ask our experts.

Chat with our AI personalities

CoachCoach
Success isn't just about winning—it's about vision, patience, and playing the long game.
Chat with Coach
FranFran
I've made my fair share of mistakes, and if I can help you avoid a few, I'd sure like to try.
Chat with Fran
ReneRene
Change my mind. I dare you.
Chat with Rene
More answers

Is 21 a prime or composite

User Avatar

Anonymous

4y ago
User Avatar

No

User Avatar

Anonymous

4y ago
User Avatar

no

User Avatar

Anonymous

4y ago
User Avatar

Add your answer:

Earn +20 pts
Q: Is 21 a prime number
Write your answer...
Submit
Still have questions?
magnify glass
imp