## Python Program to Check Prime Number

**Aim:** To generate prime number series up to n

### Algorithm to Find Prime Numbers

- step: Start
- step: Declare a lower variable and read and read the value.
- lower = int(input(“enter lower number”)

- step: Declare a higher variable and read and read value.
- higher = int(input(“enter higher number”)

- step: In n for loop take the range of values from lower to higher.
- for num in range(lower, higher +1)

- step: Check for the condition.
- if num > 1

- step: If the condition is true go to the I for loop otherwise take the next iteration.
- for i in range( 2, num):

- step: In I for loop check the condition n % i = 0
- if ( num % i) == 0:

- step: if the condition is true then break the loop.
- step: Else print(num)
- step: end.

### Source Code: Prime Number Program in Python Print 1 to 100

lower = int(input("enter lower range:"))

higher = int(input("enter higher range:"))

for num in range(lower,higher + 1):

# prime numbers are greater than 1

if num > 1:

for i in range(2,num):

if (num % i) == 0:

break

else:

print(f'prime_numbers from {lower} to {higher} are:',num)

### The output of prime number

C:\Users\Pramod\PycharmProjects\pythonProject\venv\Scripts\python.exe C:/Users/Pramod/PycharmProjects/pythonProject/main.py

enter lower range:0

enter higher range:100

Prime_numbers from 0 to 100 are: 2

Prime_numbers from 0 to 100 are: 3

Prime_numbers from 0 to 100 are: 5

Prime_numbers from 0 to 100 are: 7

Prime_numbers from 0 to 100 are: 11

Prime_numbers from 0 to 100 are: 13

Prime_numbers from 0 to 100 are: 17

Prime_numbers from 0 to 100 are: 19

Prime_numbers from 0 to 100 are: 23

Prime_numbers from 0 to 100 are: 29

Prime_numbers from 0 to 100 are: 31

Prime_numbers from 0 to 100 are: 37

Prime_numbers from 0 to 100 are: 41

Prime_numbers from 0 to 100 are: 43

Prime_numbers from 0 to 100 are: 47

Prime_numbers from 0 to 100 are: 53

Prime_numbers from 0 to 100 are: 59

Prime_numbers from 0 to 100 are: 61

Prime_numbers from 0 to 100 are: 67

Prime_numbers from 0 to 100 are: 71

Prime_numbers from 0 to 100 are: 73

Prime_numbers from 0 to 100 are: 79

Prime_numbers from 0 to 100 are: 83

Prime_numbers from 0 to 100 are: 89

Prime_numbers from 0 to 100 are: 97

Process finished with exit code 0

## FQA: To check the prime number

### How do you check if a number is prime in Python?

To check that we have to import sympy package and then use sympy.isprime(num) and the output will be True or False.**Example:****import sympyprint(sympy.isprime(5))**

### How do you generate a random prime number?

To generate a random prime number we have to import sympy package.**Syntax:**

sympy.randprime(starting_num, end_num)**Example:**

import sympy

print(sympy.randprime(0, 100))

### Is there a prime number function in Python?

yes, there is a function for a prime number in python. For that, you have to import a package called sympy.**Example:**

import sympy

print(list(sympy.primerange(0, 100)))**Output:** [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]

### How do you write a prime number program in Python?

There may be a different way but I will explain to you two ways: 1st way is by using a loop statement and passing through a condition that is explained and 2nd way is by using a function. It’s a very simple way just we have to import a package called sympy and then we have to use function i.e. list(sympy.primerange(0, 100))

### How many prime numbers are there between 1 and 1000?

There are twenty-five prime numbers from 1 to 100 and those 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]

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