Prime Numbers

Prime numbers

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 ...

Prime number

a number that is divisible only by itself and 1 (e.g. 2, 3, 5, 7, 11)
suppose a number 'n' it can be divided by if '1' and only by itself then it can be a prime number

Prime number

def is_prime(n):
  if(n<0):
    print("n is not a nature number!")
    return False
  for i in range(1,ceil(n/2)+1):
    if (i != n and i != 1 and n%i == 0):
      return False
  return True
print(is_prime(int(input("number>>"))))

Source: github.com

What are prime numbers

Prime numbers: whole numbers greater than 1 that are only divisible 
by 1 and itself.

Prime numbers

A number only divisible by 1 and itself

Prime Numbers

using System;
public class Program
{
    static void Main(string[] args)
    {
        var results = GenerateSieve(1000);
        var i=0;
        foreach (var item in results)
        {
            if(item) Console.Write(i + " ");
            i++;
        }
    }
 
    static bool[] GenerateSieve(int num)
    {
        // Creating an array indicating whether numbers are prime.
        bool[] isPrime = new bool[num + 1];
        for (int i = 2; i <= num; i++) isPrime[i] = true;
 
        // Removing out multiples.
        for (int i = 2; i <= num; i++)
        {
            // Check if i is prime.
            if (isPrime[i])
            {
                // Eliminate multiples of i.
                for (int j = i * 2; j <= num; j += i)
                    isPrime[j] = false;
            }
        }
        return isPrime;
    }
}

Source: ideone.com

Similar codes

0 vote149 views3 answers
Binding on button c#
C#
0 vote145 views1 answer
How to add object in dictionary in c#
C#
2 votes150 views1 answer
C# resize image keep aspect ratio
C#
7 votes175 views1 answer
C# absolute value
C#
10 votes152 views5 answers
Error: EACCES: permission denied, access '/usr/local/lib/node_modules'
C#
0 vote139 views1 answer
How to assign list int for method parameter in C#
C#
1 vote140 views1 answer
How to say hello world in c#
C#
18 votes141 views2 answers
Random from list c#
C#
1 vote196 views1 answer
What is type unity
C#Unity
1 vote148 views2 answers
Getcomponent
C#