Number Facts and Trivia
- Reference information on the properties of the whole numbers including interesting facts and trivia sorted by number.
- http://athensohio.net/reference/number/

Jewish Encyclopedia: Forty, the Number
- Reviews the occurrences of the number forty in the Bible, where it is second to the number seven in its frequency of occurrence.
- http://www.jewishencyclopedia.com/view.jsp?artid=274&letter=F

The Mystery of The Number 27
- Talks about the number 27 and sigthings in subjects like math, music, movies, nature and religion.
- http://www.chrismore.com/projectX/27/

Number of the Beast
- A software program that converts names and phrases to "The Number of the Beast" (666).
- http://www.mcgees.org/notb.html

One
- A site dedicated to the number 1 and its significance on society
- http://www-personal.umich.edu/~danhorn/digits/one.html

Seventeen and Yellow Pigs
- Facts about the number 17 in history, computing, and astronomy.
- http://www.vinc17.org/yp17_eng.html

Numbers
- Unique facts and properties about numbers from one to thirty one.
- http://richardphillips.org.uk/number/

The 47 Society
- An international interest-group that follows the occurrence and recurrence of the quintessential random number: 47. Many suspect that the quintessential nature of 47 carries some mystical, metaphysical and/or scientific significance.
- http://www.47.net/47society/

What's Special About This Number?
- A long list with distinctive properties of natural numbers up to 9999.
- http://www.stetson.edu/~efriedma/numbers.html

37 Heaven
- 37-centric factoids from Tom Magliery.
- http://thirty-seven.org/

Four
- Description of the number four.
- http://www.waste.org/four.html

Curious properties of 153
- Number 153 can be found in the New Testament, where in the net Simon Peter drew from the Sea of Tiberias held 153 fishes. Interesting properties of number 153 are given here.
- http://www.shyamsundergupta.com/c153.htm

Bob's Positive Integer Pages
- Various articles about positive integers, including an alternative number system that avoids the digit and number zero, a look at number systems and at the concept of zero.
- http://my.tbaytel.net/forslund/bob.html

About Big Numbers
- Explores the world of big numbers, from thousand to googol. Identifies what objects in the universe, atoms to large scale structures, match these numbers.
- http://pages.prodigy.net/jhonig/bignum/

666
- A little archive of gleanings, theories and links relating to the most misunderstood number of all.
- http://www.wordworx.co.nz/666.html