Project Euler 27 Information Center
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Last Updated: June 11, 2026

Had a lot of slip ups in this one, but got there eventually. It's actually a pretty easy problem I just got caught out by negative ... Quadratic Primes! Sorry for the delay guys! I've been super busy lately. Will try to upload more when i can. :3. Hey Nerd boys and girls! Wow, all that math looks intimidating in the challenge description, doesn't it? Well, let's just walk through ... Extremely messy in the middle, skip from like 10 minutes to 20 if you don't want to see me trying to understand how I was smarter ... In this video, I will be coding the solution for the problem # Pretty simple one using a couple of different counters to pull out the right numbers. Please don't forget to like if you liked the video ...
You're literally one click away from a better setup — grab it now! As an Amazon Associate I earn ... Starting with the number 01 and moving to the right in a clockwise direction a 5 x 5 spiral is formed as follows: 21 22 23 24 25 20 ...

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