Problem 1119. sum of non-primes

Created by li jian
Appears in Some simple basic problems

Like (4)

Difficulty:Rate

Solve Later
Add To GroupÃ‚

The sum of the non-primes no larger than 10 is 1+4+6+8+9+10=38

Find the sum of all the positive non-prime integers that do not exceed the input, N.

Solve

Solution Stats

1135 Solutions
551 Solvers

Last Solution submitted on Jul 17, 2025

Last 200 Solutions

Problem Comments

2 Comments

2 Comments

Vincent on 13 Dec 2012

The description of the problem is slightly misleading. It says the sum "below" 10, yet the sum includes 10. It should be ammended to "Find the sum of all the non-primes below the input, and including the input, N.", or something to that effect.

John D'Errico on 22 Feb 2018

I've now fixed the problem statement to be consistent.

Solution Comments

Show comments

Problem Recent Solvers551

Problem Tags

Community Treasure Hunt

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

Start Hunting!