program to print list of all prime numbers between 1 and 100

String string_starting_number = '1' //input here your choice of starting number Take note that you should input the values in string type in string_starting_number and in string_last_number. The lowest possible value for string_starting_number is 0 and the highest possible value for string_last_number is decimal.MaxValue-1=79228162514264337593543950334 and not 79228162514264337593543950335 because of the decimal_a++ command inside a for loop which will result to an overflow error.

Check, for all the values in the range using the function we defined.Here is my code where you can generate and print the prime numbers between two numbers (in between string_starting_number and string_last_number). Then we took inputs from the user and used them to run a loop between the interval. To execute this task we have defined a function that will check for prime numbers in the interval and print the value accordingly. We have learned how to display all the prime numbers between an interval. We used end=' ' to print numbers in a single line Conclusion Print('Prime numbers between', lower, 'and', upper, 'are:') Upper = int(input('enter upper limit: ')) Lower = int(input('enter lower limit: ')) Take a look at the code and try to understand it in relation to the algorithm. Step 8 - Pass each iteration to the function to check and display the number if it is prime Step 7 - Run a loop from lower to the upper limit Step 6 - Take input of lower and upper limit from user Step 4 - If the number has a factor break out of the loop Step 3 - Run a loop starting from 2 (since 1 is not a prime number) to the number to check for factors Step 2 - Check whether the number is greater than 1 Step 1 - Define a function that will check if the number is prime or not Look at the algorithm below to understand the logic. Output- Prime numbers between 3 and 10 are: The program should take input as follows, If you want to know in detail the logic behind how to check if a number is prime or not refer to this tutorial. Numbers that are not prime are called composite numbers and have more than 2 factors.įor executing this task our approach will be to run a loop from the lower limit to the upper limit and check each number in this interval if it is prime or not. First, few prime numbers are- 2,3,5,7,11. The user has to give the upper limit and the lower limit of the interval as input and our program should display all the Prime Numbers within that interval.Ī Prime Number is a natural number that is greater than 1 and has only two factors, 1 and the number itself.

In this tutorial, we will learn how to print all Prime Numbers in a given interval using for loop in Python.

Program to print list of all prime numbers between 1 and 100