Prime factor largest

		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

13 votes338 views3 answers
C# get last item in list
C#
0 vote290 views2 answers
Winform not maximizing
C#
0 vote302 views1 answer
C# get all occurrences of a string
C#
3 votes291 views1 answer
Unity on mousewheel down
C#
0 vote333 views1 answer
Get execution directory c#
C#
0 vote251 views0 answer
C#
1 vote294 views1 answer
Action being performed on this control is being called from the wrong thread c#
C#
1 vote293 views1 answer
How to write web service for API in c#
C#
1 vote301 views1 answer
How to turn off sprite renderer in unity
C#
0 vote372 views1 answer
Character stay in ground unity 3d
C#Unity