How many different primes appear in the prime factorization of 20!

qwertyuiopasdfghjkl Apr 6, 2020

#1**+2 **

8.

A prime number will only come up in the factorization of a factorial if the prime is less than n, with n being (n)!. THere are 8 primes less than 20- 2, 3, 5, 7, 11, 13, 17, and 19.

MooMooooMooM Apr 6, 2020