Here the steps show how to identify prime numbers between 1 and 100. It was named after its discoverer Eratosthenes. They are: Method 1: The Sieve of Eratosthenesīefore the discovery of calculators and computers, this method was the most widely used for finding prime numbers. There are different ways of finding prime numbers. Prime Numbers 1 to 1000 How to Find Prime Numbers Even today, they are helpful for our direct applications and mathematical calculations. ChartĮratosthenes’s method of finding prime numbers resulted in the formation of charts. Again, 2 and 3 are the only two consecutive prime numbers. 2 is the only even prime number, and the rest are all odd. Thus there is a total of 25 prime numbers between 1 and 100. For example, 4 is divisible by 1, 2, and 4Ī list of prime numbers from 1 to 100 is provided below for reference: Between 1 and 10 It can be divided evenly by all its factors. For example, 2 is divisible only by 1 and 2. It can be divided evenly only by 1 and the number itself. Difference between Prime and Composite Number Prime Number Similarly, 1 is also not a prime number as it has only one factor (the number 1 itself). Natural numbers greater than 1 that are not prime are known as composite numbers.Ġ is not a prime number, as it has infinite factors.
