Scroll down to see how it works. If you'd rather solve the problem yourself, don't scroll. . . Runs faster in Phosphorus: http://phosphorus.github.io/#75001116 . . How it works (this is a spoiler): ========================================= This number counts up by twenties starting from 20 (20, 40, 60, etc.) For each number, it checks to see if it is a multiple of 11 through 19 (10 and below don't need to be checked, because if the double of that number is a factor, then that number is also a factor). Once a number is found, that is the answer.
The @ProjectEuler account is created and maintained by @PullJosh. If you have questions, feel free to comment here or on my @PullJosh profile page for a much quicker response.
