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 with repetitions.
Calculation of the Gamma function using Lanczos approximation
Combinatorics. Permutation generator from N to M without repetitions
Online calculator computes factorial of given positive integer (up to 170!)
This calculator generates all pairs of factors for given integer.