Problem 46054. Count trailing zeros in a primorial
Cody Problem 44068 asked us to count the trailing zeros in a factorial. This problem deals with the primorial. If is the nth prime number, then the primorial # is the product of the prime numbers up to and including . For example, if n = 5, then # = = 2310, which has one trailing zero.
Count the trailing zeros in the primorial #. Because primorials become large quickly, for large n it helps to derive a formula for the number of trailing zeros.*
Please make your code general because I might add more tests later.
See also Cody Problems 46057 "Find the last non-zero digit in a primorial" and 46060 "Identify primorial primes".
*;-)
Solution Stats
Problem Comments
Solution Comments
Show commentsProblem Recent Solvers27
Suggested Problems
-
Sort a list of complex numbers based on far they are from the origin.
5520 Solvers
-
Project Euler: Problem 6, Natural numbers, squares and sums.
2045 Solvers
-
13158 Solvers
-
97 Solvers
-
391 Solvers
More from this Author249
Problem Tags
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!