I built an interactive book to explore pi and search its first billion digits
Discover pi in an interactive book: its definition, circle formulas and a search through more than a billion decimal digits. Open the contents.
Quick read
An interactive online book explaining pi, its circle formulas, and its meaning. It also provides tools to browse and search over one billion decimal digits and download large slices of them.
- Read explanatory chapters about pi and its formulas
- View the first 100 digits and browse up to 1 billion digits
- Search digits and download up to 1,000,000 decimals
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What we found on this site
- Served through
- Apache
- Home page answered in
- 696 ms
- Trackers
- Google Analytics
- Ads
- Yes
- RSS feed
- No
- AI crawlers
- Lets them in
- Set up for phones
- Yes
- Real-visitor speed
- Passes Core Web Vitals
- Popularity
- Top 200,000 domain (Cloudflare)
- Google safety check
- No threats found
- Domain registered
- 2026
- Domain renews
- October 2027
Checked November 6, 2026 from the site’s own code and public records. See how the rest of the web compares in the NexURLs Internet Report.
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