Step 3: 3 is the next number in the list after 2 cross out all the multiples of 3 in the list, such as 6, 9,12, 15, 18, 21, 24 and so on up to 100.The number 2 is the first number in the list and it is a prime number too cross out all the multiples of 2 in the list. Step 2: Ignore the number 1 and start from 2.
Step 1: First create a list of numbers from 2 to 100 as shown in the figure given below.Leave the number 1 as all prime numbers are greater than one. The following steps show how to find all the prime numbers up to 100 by Eratosthenes' method.
It is an ancient method for finding all the prime numbers up to any given limit. We can find prime numbers in mathematics by using an ancient technique, that is, the sieve of Eratosthenes.
