Prime Numbers from 1 to 100

Let’s learn how to find prime numbers from 1 to 100

We follow the steps

1. Cross out 1 as it is neither prime, nor composite
   
   
2. 2 is prime as its factors are 1 & 2.
   So, all its multiples will have 2 as factor. So, cross all those numbers.
   Numbers like 4, 6, 8, 10, 12, 14, … will be crossed out
   
   
3. 3 is prime as its factors are 1 & 3
   So, all its multiples will have 3 as factor. So, cross all those numbers.
   Numbers like 6, 9, 12, 15, 18, 21, 24, .... will be crossed out
   
   
4. Repeat the process for other numbers until we find all the prime numbers

Thus, Prime numbers from 1 to 100 are

2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97