title: Calculate the sum of all the primes below two million. url: http://projecteuler.net/problem=10 desc: | The sum of the primes below 10 is 2 + 3 + 5 + 7 = 17. Find the sum of all the primes below two million. solution: | Use a primenumber tester solutions: solve.php: desc: Basic solution language: php solve.rb: desc: Basic solution language: ruby solve.c: desc: ANSI C solution compiled with gcc-4.3.4 language: c