/// <summary>
/// Main Thread
/// </summary>
static void Main()
{
const int MAX_NUMBER = 100;
for (int i = 2; i <= MAX_NUMBER; i++)
{
numbers.Add(i, PrimeNumber.GetIntegerFactorization(i));
}
for (int i = 2; i <= MAX_NUMBER; i++)
{
foreach (KeyValuePair <int, Dictionary <Int64, Int64> > kvp in numbers)
{
StringBuilder powDescribed = new StringBuilder();
foreach (KeyValuePair <Int64, Int64> p in kvp.Value)
{
powDescribed.Append(
p.Key.ToString("D4")).Append("@").Append((p.Value * i).ToString("D4"));
}
if (!pows.Contains(powDescribed.ToString()))
{
pows.Add(powDescribed.ToString());
}
}
}
Console.WriteLine("Solution: {0}", pows.Count);
}
/// <summary>
/// Main Thread
/// </summary>
static void Main()
{
const int maxNumber = 20;
Dictionary <Int64, Int64> factors = new Dictionary <Int64, Int64>();
for (int i = 2; i < maxNumber; i++)
{
foreach (KeyValuePair <Int64, Int64> kvp in PrimeNumber.GetIntegerFactorization(i))
{
if (factors.ContainsKey(kvp.Key))
{
if (kvp.Value > factors[kvp.Key])
{
factors[kvp.Key] = kvp.Value;
}
}
else
{
factors.Add(kvp.Key, kvp.Value);
}
}
}
Int64 result = (from p in factors
select Int64.Parse(Math.Pow(p.Key, p.Value).ToString())).Aggregate((total, next) => total * next);
Console.WriteLine("Solution: {0}", result);
}
/// <summary>
/// Main Thread
/// </summary>
static void Main()
{
bool itemNotFound = true;
for (int i = 1; itemNotFound; i++)
{
Dictionary <Int64, Int64> d1 = PrimeNumber.GetIntegerFactorization(i);
Dictionary <Int64, Int64> d2 = PrimeNumber.GetIntegerFactorization(i + 1);
Dictionary <Int64, Int64> d3 = PrimeNumber.GetIntegerFactorization(i + 2);
Dictionary <Int64, Int64> d4 = PrimeNumber.GetIntegerFactorization(i + 3);
bool distinctPrimes = CompareFactorizations(d1, d2) && CompareFactorizations(d1, d3) && CompareFactorizations(d1, d4) &&
CompareFactorizations(d2, d3) && CompareFactorizations(d2, d4) &&
CompareFactorizations(d3, d4);
if (distinctPrimes)
{
itemNotFound = false;
Console.WriteLine("Solution: {0}", i);
}
}
}
/// <summary>
/// Main Thread
/// </summary>
static void Main()
{
Console.WriteLine("Solution: {0}", PrimeNumber.GetIntegerFactorization(600851475143).Last().Key);
}
