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Find prime numbers in given range

Hello

In this article, we are going to see how to print all prime numbers between a given range. We have shared code in python language.

What is Prime number?

Prime number is a number who is divisible by 1 and that number only. There are no factors other than these 2 two.

Example of Prime number: 11,13,29 . All of these numbers do not have factors other than 1 and given number. Prime number can only be odd number.

How to find whether a number is prime or not?

For a given number, we will check whether a number do not have factor from 2 till square root of the number. We will run a iterative loop and see if there is any number which is factor of that number.

How to check whether a number is prime through programming

 

import math
def checkPrime(number):
	if(number<1):
		return False

	i=2
	while(i<math.sqrt(number)):
		if(number%i==0):
			return False
			break
		i+=1

	return True

def getPrimeNumberinRange(number1, number2):
	if(number1>number2):
		return "Invalid range"
	primenumberlist= []
	j=number1
	while(j<number2+1):
		if(checkPrime(j)):
			primenumberlist.append(j)
		j+=1
	return primenumberlist

print(getPrimeNumberinRange(1000,3000))

In this article, we have saw how to print prime number in a given range in Python. If you have any confusion regarding the code, please do comment in discussion thread below or send us email to info@xamnation.com. 

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