Finding Prime Numbers

Learn to find prime numbers in Ruby.

Problem

Find the prime numbers between 11 and 2020 and store them in an array called array .

Prime numbers (up to 20) are : 2, 3, 5, 7, 11, 13, 17, 19
Find prime numbers

Prime number

A prime number is a number that is bigger than one, and has no divisors other than ...