Current location: Math > Recreations > Specific Numbers
21. Number Gossip
Numerous special categories of numbers, searchable.
http://www.tanyakhovanova.com/Numbers/ - 16-07-2002
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Rating: [4.00] Votes: [1099]
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22. The Infinitesimal
The infinitesimal is the opposite of infinity, and mathematicians still argue over its existence. This page probes into one of the wierdest numbers in mathematics.
http://stewy6.tripod.com/infinitesimal.htm - 12-09-2000
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[detailed information]
Rating: [4.00] Votes: [2419]
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23. Triangular Numbers
Properties of triangular numbers including reversible, happy, harshad, highly composite, deficient, abundant ones.
http://www.shyamsundergupta.com/triangle.htm - 20-04-2002
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Rating: [4.00] Votes: [876]
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24. Verbose.net
Dedicated to the natural order of the universe and to the irrational and logical chaos it presents.
http://www.verbose.net/ - 23-04-2002
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[detailed information]
Rating: [4.00] Votes: [1954]
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25. Vampire Numbers
Numbers with a factorization containing the same digits, e.g. 1530 = 30*51.
http://hjem.get2net.dk/jka/math/vampires - 29-09-2000
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[detailed information]
Rating: [3.00] Votes: [20]
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