What powers projecteuler.net?
Last seen Jun 2026 · 7 technologies across 6 categories
CDN
cdnjs
since Sep 2022
Cloudflare
since Sep 2022
Font scripts
Miscellaneous
PWA
since Aug 2022
Programming languages
Security
HSTS
since Sep 2022
Web servers
Apache HTTP Server
since Apr 2018
Top search keywords
| Keyword | Position | Est. monthly visits |
|---|---|---|
| roman numerals | #9 | 5,100 |
| euler | #5 | 1,000 |
| pro-ject | #82 | 190 |
| define hyperbolic | #56 | 70 |
| euler's problem | #1 | 64 |
| euler problems | #1 | 64 |
| complicated riddles | #69 | 52 |
| riddle oil | #96 | 47 |
| euler mathematician | #90 | 47 |
| euler | #61 | 47 |
| leonhard euler | #15 | 41 |
| euler leonhard | #28 | 38 |
| math problems | #43 | 35 |
| problem 1 | #2 | 34 |
| euler problem | #1 | 32 |
| mathematics questions | #59 | 31 |
| math problem solver | #38 | 29 |
| collatz sequence | #21 | 28 |
| project euclid | #2 | 28 |
| fibonacci series numbers | #88 | 25 |
| project euler problem 1 | #1 | 21 |
| heighway dragon | #9 | 20 |
| euler problems | #3 | 20 |
| computer programming | #78 | 19 |
| pro ject | #68 | 19 |
The site's top keywords in Google (US), with the visits each one is estimated to bring per month.
Top backlinks
Top links pointing at the site, one per source domain, strongest first. The anchor text opens the page carrying the link.
Audience
- 78% desktop
- 21% phone
- 1% tablet
United States
India
Japan
Germany
United Kingdom
France
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
7.50 / 10 · ranked #17,263 of all domains
1,097 referring domains · OpenPageRank
Search traffic
8,000 est. monthly organic visits (US)
2,542 keywords in Google's top 30
Core Web Vitals
| LCP | 0.7 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 600 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: English
- Weight: 0.5 MB · 14 requests
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| projecteuler.net | 7 |
| www.projecteuler.net | 1 |