Nov 11, 2018 · Here's a Python implementation of a well-known algorithm (the Sieve of Eratosthenes) for generating the first n primes (credit to tech.io for the code): primes = 2*[False] + (n-1)*[True] for i in range(2, int(n**0.5+1.5)): for j in range(i*i, n+1, i): primes[j] = False. return [prime for prime, checked in enumerate(primes) if checked]

In Python, we can also use the for...else statement to do this task without using an additional flag variable. print(num, "is not a prime number") elif num > 1: # check for factors for i in range(2,num): if (num % i) == 0: print(num,"is not a prime number") print(i,"times",num//i,"is",num) break else: print(num,"is a prime number")

Write python programs to find prime numbers using for loop and while loop and also within a given range between 1 to 100.

Oct 20, 2024 · Here is a simple Python program to print prime numbers from 1 to 100 using for loop. if num < 2: return False. for i in range(2, int(num**0.5) + 1): if num % i == 0: return False. return True. for num in range(start, end + 1): if is_prime(num): print(num)

Oct 8, 2024 · First, take the number N as input. Then use a for loop to iterate the numbers from 1 to N; Then check for each number to be a prime number. If it is a prime number, print it. Approach 1: Print prime numbers using loop. Now, according to formal definition, a number ‘n’ is prime if it is not divisible by any number other than 1 and n. In ...

In this program, we first prompt the user to input a number. We then declare a boolean variable is_prime and initialize it to True. We then use a for loop to iterate over the numbers 2 to num-1. For each number i, we check if num is divisible by i. If …

To print prime numbers from 1 to 100 in Python, you can use a loop to iterate through the numbers and check if each number is prime. You can utilize the previously defined prime-checking function. If the number is prime, print it.

Oct 16, 2024 · Here is the complete Python code to print prime numbers from 1 to n in Python. if num <= 1: return False. for i in range(2, int(num**0.5) + 1): if num % i == 0: return False. return True. for num in range(2, n + 1): if is_prime(num): print(num)

Source code to print all prime numbers between two numbers enterd by user in Python programming with output and explanation...

Dec 23, 2022 · Python Program to find Prime Number or Not is used to check whether the given number is Prime or Not using For-Each loop and printing it in the output screen.