This calculator calculates number of combinations, arrangements and permutations for given n and m
Combinatorics. Generator of combinations of m from n.
Combinatorics. Permutation generator from N to M without repetitions
Combinatorics. Permutation generator from N to M with repetitions.
Online calculator computes factorial of given positive integer (up to 170!)
This calculator generates all pairs of factors for given integer.
Calculation of the Gamma function using Lanczos approximation
For elements with weights this calculator can filter out all combinations where total weight is under the specified limit.