83 (number) facts for kids

Eighty-three is a number that comes right after eighty-two and just before eighty-four. It is an odd number, which means you can't divide it evenly by two. Eighty-three is also special because it is a prime number.

What is a Prime Number?

A prime number is a whole number greater than 1 that has only two factors (divisors): 1 and itself. This means you can only divide a prime number evenly by 1 and by the number itself. For example, 7 is a prime number because you can only divide it evenly by 1 and 7. You can't divide it evenly by 2, 3, 4, 5, or 6.

Why is 83 a Prime Number?

To check if 83 is a prime number, we try to divide it by smaller prime numbers. We start with the smallest primes:

• Is 83 divisible by 2? No, because it's an odd number.
• Is 83 divisible by 3? No, because 8 + 3 = 11, and 11 is not divisible by 3.
• Is 83 divisible by 5? No, because it doesn't end in 0 or 5.
• Is 83 divisible by 7? No, because 83 divided by 7 is 11 with a remainder of 6 (7 x 11 = 77, 7 x 12 = 84).
• Is 83 divisible by 11? No, because 83 divided by 11 is 7 with a remainder of 6 (11 x 7 = 77, 11 x 8 = 88).

We only need to check prime numbers up to the square root of 83. The square root of 83 is about 9.1. So, we only needed to check primes 2, 3, 5, and 7. Since 83 is not divisible by any of these, it is a prime number!

Where Can We See 83?

Numbers like 83 appear in many places around us. For example, the TI-83 is a very popular type of calculator often used by students in math and science classes. It's a tool that helps people work with numbers every day.

Images for kids

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  A TI-83 calculator, a common tool for students.

See also

In Spanish: Ochenta y tres para niños