What is a prime number between 70 and 80?

1 Answer
Jim G. ยท Stefan V.
May 22, 2016

71, 73, and 79

Explanation:

A prime number is a number that can only be divided by 1 or itself. Otherwise, it is a composite numbers.

There are three numbers between 70 and 80 that fit this criteria, 71, 73, and 79

Here is a worksheet you can use to find all the primes between 1 and 100 for yourself. A similar method was used by mathematicians in Ancient Greece.

It is called the color(blue)"Sieve of Eratosthenes"

![https://ro.pinterest.com/explore/sieve-of-eratosthenes/](useruploads.socratic.org)

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