Introduction - If you have any usage issues, please Google them yourself
The Fourier algorithm uses an instance of the base 2, base 3, base 4, base 5, base 8, base 10 ... ... hybrid algorithm can calculate almost any length of FFT. Say clearly that that is when the sequence length n for 2,3,5,7,11 and so on these relatively small prime numbers, or when n, the largest prime factor "= 37 hours, calculate the sequence of the FFT.