Prime number check (★★) - MATLAB Cody - MATLAB Central

Problem 45767. Prime number check (★★)

Difficulty:
(23)
Rate
One way to see if a number x is prime is to compute the remainders obtained when dividing x by all integers from 2 to √(x). If x is prime, then all remainders will be non-zero.
For example, if x = 35 then √(x)=5.916, and the set of divisors from 2 to √(x) are [2 3 4 5]. The remainders obtained when dividing 35 by 2,3,4,5 are 1,2,3,0 respectively. Since one of the remainders is 0, the number x is not prime.
Write a function that will compute the remainders obtained when dividing x by all integers from 2 to √(x).
Avoid using for/while loops.
Solve

Solution Stats

52.58% Correct | 47.42% Incorrect
Last Solution submitted on Jul 22, 2024

Problem Comments

Solution Comments

Show comments

Problem Recent Solvers45

Suggested Problems

More from this Author52

Problem Tags

division remainder

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!
Go to top of page