to write the program for semi tri quad and upto 15primes

Question

hello sir to write the program for semi  tri quadquint primes and upto 15primes numbers in asp.net any logic to find these prime numbers please help me to solve it.......................

Vulpes · Answer

As I'm not sure how you'd want to present the generation of these numbers in an ASP.NET application I've used a console application instead. The basic logic will of course be the same: using System; using System.Collections.Generic; using System.Linq; class Test { static void Main() { int n = 5; int limit = 180; List nPrimes = GetN_AlmostPrimes(n limit); for(int i = 0; i { Console.Write({08} nPrimes[i]); } } static bool IsPrime(int i) { if (i for (int j = 2; j { if (i % j == 0) return false; } return true; } static List GetN_AlmostPrimes(int n int limit) { List primes = new List (); int highest = limit/(1 for (int i = 2; i { if (IsPrime(i)) { primes.Add(i); } } if (n > 1) { IEnumerable nPrimes = primes; for(int i = 2; i { List tempList = new List (); foreach(int prime in primes) { foreach(int nPrime in nPrimes) { int temp = prime * nPrime; if (temp } } nPrimes = tempList.Distinct(); } return nPrimes.OrderBy(p => p).ToList(); } else { return primes; } } } I've tested this for values of n from 2 (semi prime) to 5 (quint prime) and the results are consistent with those shown in the following link: http://mathworld.wolfram.com/AlmostPrime.html

to write the program for semi , tri, quad and upto 15primes