What is the problem with my code for finding whether a number is prime or not Question: N = int(input()) flag = False if N <= 2: print(‘no’) for j in range(2, int(N**0.5)+1): if N%j == 0: flag = True if flag == False: print(‘yes’) else: print(‘no’) The logic is same everywhere I saw the …
Problem with simple prime number function Question: I am trying to make a function to check if a number is a prime number based on the result of a modulo operation; so far so good but it seems to classify 9 as a prime number for some reason. def is_prime(x): if x <= 1: return …
How do you calculate the amount of prime numbers less than or equal to N? Question: I want to write a program that determines the amount of prime numbers less than or equal to N (variable containing user input). This is what I’ve got: N = int(input("Enter number: ")) count = 0 primes = [] …
How to get only a single output of the result in python program? Question: I was writing a code in python to identify prime number. Here is the code n=int(input("Enter any integer")) for i in range(2,n,1): if n%i==0: print(n, " is not a prime number") break else: print("Prime number") But the problem is that I …
Python squaring a square rooted number gives a different result although it should be the original number Question: Im working on RSA so I’m dealing with very large numbers (308 digits). In RSA a number N is the product of 2 primes p and q. My N: 20254083928313901046078299908836135556415829454193867459405514358320313885965296062600909040071281223146837763723113350068483510086809787065437344845044248205975654791622356467691953988928774211033663314876745580293750456921795999384782277674803240671474563131823612882192899349325870727676292313218782419561 For the task I’m completing, I have …
Error: the encoded message must be a list of integers Question: I am creating a prime encryption program however I am running into a very perplexing error. This is my code: import random import datetime def decode(encoded_message, p): # Initialize an empty list to store the decoded message decoded_message = [] # Iterate over the …
Get Twin Primes as output from an inputted list Question: I want to enter numbers separated by spaces as input and store them in a list. I want to get all twin primes in that list as output. If there’s no any twin primes in that inputted numbers I want to have an output "No …
sum of prime numbers Question: I have an exercise: Write a program that takes the number n from the input and prints all cases of prime numbers whose sum is equal to n. For example: input is n = 13 and output is: 2 2 2 2 2 3 2 2 2 2 5 2 …
wanted to have a single list instead of multiple list showing prime numbers Question: I tried to make a program that shows all prime number till the limit but the code shows each factor adding to the ans list. How do I fix this? limit = 34 num = [value for value in range(2, limit …
Timing operation with increasing list size – unexpected behaviour Question: Problem: How long does it take to generate a Python list of prime numbers from 1 to N? Plot a graph of time taken against N. I used SymPy to generate the list of primes. I expected the time to increase monotonically. But why is …
