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The First 25 Million Digits of Pi Book - Optional Magnifier - Included Bookmark - Customizable

The First 25 Million Digits of Pi Book - Optional Magnifier

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List Price: $74.95
Sale Price: $54.95
Savings: $20.00

Quantity in Stock:(Out of Stock)
Product Code: BK-M25-01

Magnifier / Loupe:

Book Customization:
Up to 200 characters are allowed. Adds $5 to cost of book. Leave blank to ignore this option.


Available starting 9/16/2019

Item: The First 25 Million Digits of Pi Book. You read that correctly - the first 25 MILLION DIGITS OF Pi. Finally, a book version of our epic Pi posters. The Pi digits are crisply printed at under 2 point in size. Super tiny. Super crisp. Super awesome.

The First 25 Million Digits of Pi Book makes a coffee table book worthy of conversation, or treasure it on your book shelf along with other math or science classics. Whether you are an expert or just a Pi fan, this is a book you will enjoy having. It's not a math textbook since the 25 million digits are the content, but we do include an introduction to Pi at the start of the book.

What kinds of patterns can you find among the digits? Can we determine anything fundamental about Pi by studying the first 25 million digits or do we need more? (We can print more, but not all of them. jk)

Magnifier / Loupe: Unless you have a strong magnifying glass or loupe with at least 5-10x power, we highly suggest you add one to your order. Depending on availability, we may provide a different magnifier than shown in the photos but it will have the same specs as what you've chosen, or better. The magnifiers we provide are a great combination of value and power.

We are offering either a 2.5x/6x credit card size magnifier or a 30x chrome magnifier. How to choose really depends on your close-up vision. I prefer the 2.5x/6x because it has a large field of view and my eyes don't have to be as close to the book. But my close-up vision is very good and many folks may welcome the additional magnification of the 30x. Do your best to make the choice that's right for you but we can work it out if you need a different option.

Here for magnifier guidelines.

Bookmark: We include a Pi bookmark with each book. The bookmark has beautiful Pi artwork printed on it and also has a Velcro "dock" where the optional credit card magnifier can be kept so it's harder to lose.

Colors: Black digits on white background. A color Pi character image occurs every 10 pages as a navigation aid. Pi digits are readable through the colored Pi character image.

Quality: This book is professionally bound and printed on lay-flat paper for easy viewing.

Size: Outside hard cover is 8.25 x 11.25 inches. Page size is 8 x 11 inches. Number of Pages: 171

Binding Type: Hard Cover

ISBN: 978-0-578-52636-2

Awesome Pi Facts:

  • Pi is the ratio of a circle’s circumference to its diameter.
  • Pi is an irrational number, so it has an infinite number of decimal digits without a pattern or order.
  • The Pi symbol Π was first introduced by William Jones in 1706.
  • Archimedes calculated upper and lower bounds for Pi via the areas of two hexagons– one inscribed in a circle and the other circumscribing it. Then he kept doubling the number of sides to improve the bounds’ accuracy.
  • Pi Day is March 14th every year.

Item #'s: BK-M25-01-6X (w/Credit Card Magnifier), BK-M25-01-30X (w/Metal 30x Magnifier), BK-M25-01-Z (No Magnifier)

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