Largest prime factor C#

		static long LargestFactor(long n)
        {
            long lastFactor;
            if (n%2==0)
            {
                lastFactor = 2;
                n/=2;
                while (n % 2 == 0)
                    n/=2;
            }
            else
            {
                lastFactor = 1;
            }
            long factor = 3;
            long maxFactor = Convert.ToInt64(Math.Sqrt(n));
            while (n > 1 && factor <= maxFactor)
            {
                if(n % factor == 0)
                {
                    n/=factor;
                    lastFactor=factor;
                    while (n % factor == 0)
                        n/= factor;
                    maxFactor = Convert.ToInt64(Math.Sqrt(n));
                }
                factor += 2;
            }
            if (n == 1)
                return lastFactor;
            else
                return n;
        }

Source: icodeblock.blogspot.com

Similar codes

0 vote120 views2 answers
Unity 2d top down movement script
C#
0 vote109 views2 answers
As keyword c#
C#
37 votes118 views5 answers
How to generate random number in unity
C#
5 votes144 views2 answers
How to check if key is held in unity
C#Unity
0 vote129 views1 answer
C# square every digit of a number
C#
1 vote115 views1 answer
C# check if list contains string case insensitive
C#
7 votes117 views1 answer
How to reference function in unity
C#
0 vote90 views1 answer
The process cannot access the file because it is being used by another process. press any key to continue...
C#
0 vote116 views2 answers
C# check file similarities
C#
0 vote118 views1 answer
Wpf background color
C#