answersLogoWhite

0

By number theory, half of 371's factors will be less than its square root. Since 371 is less than 400, the square root will be less than 20. Since 371 is odd, all of its factors will be odd. By the rules of divisibility, we know that 371 is not divisible by 3, 5 or 9, so all we have to check is 7, 11, 13, 15, 17 and 19.

371 ÷ 7 = 53, so 371 is not prime.

User Avatar

Wiki User

10y ago

Still curious? Ask our experts.

Chat with our AI personalities

ReneRene
Change my mind. I dare you.
Chat with Rene
BlakeBlake
As your older brother, I've been where you are—maybe not exactly, but close enough.
Chat with Blake
CoachCoach
Success isn't just about winning—it's about vision, patience, and playing the long game.
Chat with Coach

Add your answer:

Earn +20 pts
Q: How do you work out if 371 is a prime number?
Write your answer...
Submit
Still have questions?
magnify glass
imp