Dec 1, 2021 · def prime_number_generator(num): for n in range (1,num): for prime in range (2,n): if (n%prime) ==0: break else: yield n You are yielding n if it is not exactly divisible by prime. Here is an example for what happens when n = 5: First, prime = 2.

May 7, 2011 · I wrote a piece of code to print n prime numbers: def __init__(self): self.current = 2. def genPrime(self, num): for i in range(num): while 1: for j in range(2, self.current/2 + 1): if self.current % j == 0: self.current = self.current + 1. break. else: break. print self.current, self.current = self.current + 1. p = PrimeGen() p.genPrime(5)

Apr 8, 2025 · Explanation. n = 20, meaning we want to find and print prime numbers up to 20.; We introduce a counter variable that increments every time a prime number is found.; Only when the counter is even the prime number is printed (if count % 2 == 0).This ensures that every second prime number is skipped (i.e., we print alternate primes). The counter is incremented by 1 …

Oct 16, 2024 · The simplest way to find and print prime numbers from 1 to N in Python is by using basic iteration and checking for each number’s divisibility. Let me show you an example and the complete code. 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):

Apr 10, 2025 · isprime () function from the SymPy library checks if a number is prime or not. It prints False for 30, True for 13 and True for 2 because 30 is not prime, while 13 and 2 are prime numbers.

Here, we store the interval as lower for lower interval and upper for upper interval using Python range(), and printed prime numbers in that range. Visit this page to learn how to check whether a number is prime or not .

Feb 14, 2025 · A straightforward way to check if a number is prime is by using a loop. Here’s a straightforward Python function to accomplish that: if n <= 1: return False. for i in range(2, n):

Dec 5, 2024 · To find a prime number in Python, you have to iterate the value from start to end using a for loop and for every number, if it is greater than 1, check if it divides n. If we find any other number which divides, print that value.

Mar 31, 2025 · 2. Using math.sqrt function. In this section, we’ll use Python math module to check if number is Prime number. The math.sqrt() function in is used to calculate the square root of a given number. By calculating the square root of the given number we only need to check for divisors up to the square root of the number.

Mar 31, 2025 · In this Python method, instead of checking divisibility up to the number itself, we only need to check up to the square root of the number. This optimization reduces the number of unnecessary checks. The math.sqrt() function in Python is used to calculate the square root of a given number. For instance, consider n = 49: The square root of 49 is 7.