Python Program to Print All Prime Numbers Between 1 to N

27-Oct-2022

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Hi Dev,

In this short tutorial we will cover an Python Program to Print All Prime Numbers Between 1 to N. it's simple example of print n prime numbers in python. you will learn How to Display all Prime Numbers from 1 to N in Python. This post will give you simple example of Program for Prime numbers between two numbers in Python. You just need to some step to done Write a Python Program to print Prime Numbers from 1 to N using Loop.

Python program to print prime numbers from 1 to n; In this tutorial, you will learn how to print prime numbers from 1 to n (10, 100, 500, 1000) using for loop and while loop in python.

let's see below simple example with output:

Example 1: Python Program to find Prime Number using For Loop

```Python Program to Check A given Number is Prime Or Not
Num = int(input(" Please Enter any Number: "))
count = 0
for i in range(2, (Num//2 + 1)):
if(Num % i == 0):
count = count + 1
break
if (count == 0 and Num != 1):
print(" %d is a Prime Number" %Num)
else:
print(" %d is not a Prime Number" %Num)
```

Output:

```Please Enter any Number:  50
50 is not a Prime Number
```

Example 2: Python Program To Print Numbers From 1 to N Using For Loop

```# Python Program to print n prime number using for loop

Number = int(input(" Please Enter any Number: "))

print("Prime numbers between", 1, "and", Number, "are:")

for num in range(1, Number + 1):
# all prime numbers are greater than 1
if num > 1:
for i in range(2, num):
if (num % i) == 0:
break
else:
print(num)
```

Output:

```Please Enter any Number:  20
Prime numbers between 1 and 20 are:
2 3 5 7 11 13 17 19
```

Example 3: Python Program To Print Numbers From 1 to N Using While Loop

```# Python Program to print Prime Numbers from 1 to N

max = int(input(" Please Enter Any Number: "))

Number = 1

print("Prime numbers between", 1, "and", max, "are:")

while(Number <= max):
count = 0
i = 2

while(i <= Number//2):
if(Number % i == 0):
count = count + 1
break
i = i + 1

if (count == 0 and Number != 1):
print(" %d" %Number, end = '  ')
Number = Number  + 1
```

Output:

```Please Enter Any Number:  10
Prime numbers between 1 and 10 are:
2   3   5   7
```

Example 4: Python program to find sum of all prime numbers between 1 to n

```# Python Program to print n prime number using for loop

max = int(input("Find sum of prime numbers upto : "))

sum = 0

for num in range(2, max + 1):

i = 2

for i in range(2, num):
if (int(num % i) == 0):
i = num
break;

#If the number is prime then add it.
if i is not num:
sum += num

print("\nSum of all prime numbers upto", max, ":", sum)
```

Output:

```Find sum of prime numbers upto :  25
Sum of all prime numbers upto 25 : 98
```