Education tools / Project Euler
Project Euler
A website dedicated to the fascinating world of mathematics and programming
Where it stands
4.1 / 5
Signals score
Not a hands-on test
Based on 2 of 3 signals
- Website health4.6 / 5 · weight 50%
Measured from the tool's public website
- Community4.4 / 5 · weight 20%
What people said in public discussions
Built only from what we can measure or quote without using the tool. How ranking works
Rank by signals
We have not run our own hands-on test on Project Euler yet. Facts checked 2026-11-08. How tests work
Disclosure: agathox makes some of the tools listed here. They are labelled and scored by the same method as every other tool.
Should you use Project Euler?
A quick read built only from what the tool's own pages state and from our tests, not from opinion. Facts checked 2026-11-08.
A good fit if…
- You want a free option. It states: “Project Euler is completely free to use. The page says: “Otherwise, please Register – it's completely free!.””
Check first
- Its pages do not state: pricing, watermark. Check on the tool's site before you rely on it.
Does: Coding practice
Measured signals
4.6 / 5 · measured 2026-11-08Read automatically from Project Euler's public website: how reliable, secure, private and open the site is. This is not a test of how well the tool does its job. How this is measured
- Reliability5 / 5The page answered and finished downloading in 313 ms.
- Security5 / 55 of 5 protective headers set (strict-transport-security, content-security-policy, x-content-type-options, referrer-policy, x-frame-options).
- Privacy5 / 5No third-party tracking services found on the page.
- Transparency3 / 5Links a privacy policy; no pricing page linked.
Community feedback
4.4 / 5 · 38 commenters97% of the 38 people whose comments we could classify were positive. Read automatically from public Hacker News threads about Project Euler; the classifier is simple and can misread sarcasm, so check the threads. How this works
- Positive
“The best technical interview I ever had involved picking a random Project Euler problem in the hundreds and pair-programming our way through it. The CTO wrote his version in Python and I worked in Perl . The same company…”
Read in the thread - Positive
“I love project euler, but I've come to the realization that its purpose is to beat programmers soundly about the head and neck with a big math stick. At work last week, we were working on project euler at lunch, and had…”
Read in the thread - Critical
“I'm really disappointed that Project Euler doesn't do more to motivate the vertically-challenged to excel in STEM fields.”
Read in the thread
Threads: Project Euler (2017, 163 comments) · Project Euler (2025, 134 comments) · Project Euler (2014, 134 comments) · Project Euler (2021, 128 comments)
These facts may be out of date. One of the official pages they came from changed on 2026-11-10, after we last read it. Check the tool's own pages before you rely on a price or a limit.
- Free tier
- Project Euler is completely free to use. The page says: “Otherwise, please Register – it's completely free!.”
- Paid plan
- Not stated.
- Signup
- An account is necessary to track progress. The page says: “In order to track your progress it is necessary to setup an account and have Cookies enabled.”
- Watermark
- Not stated.
- Where files go
- Account data and performance metrics are stored in a database. The page says: “The primary purpose of creating an account is to keep track of which problems you have solved and, as you continue to solve the problems, which awards you have earned; the date and time that you solve each problem is also stored in the database.”
From the tool's own pages, checked 2026-11-08. Sources: Home, Privacy. Prices and limits change; check the tool before you rely on them.
Read automatically by a program, not by a person. Each fact quotes the sentence it came from, and a fact is shown only if that sentence is on the page. Where a page did not say, it reads “Not stated.”
Get an email if Project Euler changes
We check its official pages every week. If they change, we tell you, so you can see if the price or limits moved. No other email, and one click stops it.
Are you the maker of Project Euler? Link to this page
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<a href="https://agathox.com/tools/project-euler">Project Euler on agathox: compared and tested</a>
Tasks and scores
- Coding practiceNot tested yet
Similar tools
Top signals in Coding practice.
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