I did a lot of these when I was around 15-16 and it solidified for me my interest in CS but in general abstract thinking and problem solving. Great site.
sizzzzlerz 11/12/2025||
i was a euler fanatic some years ago reaching problems in the 500s albeit, skipping problems along the way. at that point, too many problems required a deeper math background than i possessed so i abandoned it. what amazed me was that others composed solutions that solved problems in mere milliseconds that brute force approaches would still be running when the universe cooled to absolute zero.
rbongers 11/12/2025|
I only reached the 100s back in the day. What amazed me was that it seemed like every problem had a paper solution, when it would take any computer algorithm thousands or millions of computations to solve the same problem.
rufus_foreman 11/12/2025||
I played around with some of the easier problems, my favorite was a couple times when starting with the obvious brute force solution in code and then refactoring and simplifying it iteratively ended up getting me the paper solution.
anthk 11/12/2025||
Thanks for reminding me this; I'd try to solve them both in Scheme (s9fes) and JimTCL.
theotherpablo 11/12/2025||
Anyone else having problems registering? or is my solution to Problem Zero wrong...
sbmthakur 11/12/2025||
Hackerrank also used to host(still has?) PE problems with additional test cases.
medbar 11/12/2025||
very surprised this project is still releasing problems weekly - I remember this being up when I was in high school. maybe I'll pick it up again since I only did the first ~30 or so back then.
philiplu 11/12/2025|
Not only are they still releasing problems weekly, they have a long backlog of problems waiting for release. I submitted a problem back in April 2024, and it didn't get published until October 2025 (problem 963). There's an excellent core development team that works with problem-submitters to get problems tuned up for Project Euler.
shaunxcode 11/12/2025||
this is how you end up getting into APL/array langs for sure.
rajandatta 11/13/2025|
Second this ... have been writing some solutions in Kap, an APL like variant. It's stunning to see 20+ idiomatic solutions in one screen as many problems can be solved in a compact manner. The elegance really reminds one of why we fell in love with Programming in the first place
theotherpablo 11/12/2025||
Anyone else having problems registering or is my solution wrong?
darylteo 11/12/2025||
How I learnt about prime number sieves.
Good prep for Advent of Code in 2 weeks.
nurettin 11/12/2025|
2007 I remember writing one-liner ruby solutions up to 100.