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Are You Looking For? What Is a Triangular Number Deficient Number What Is an Abundant Number List of Perfect Numbers Perfect Number Definition Examples of Perfect Numbers List of All Perfect Numbers History of Perfect Numbers	1. SS > factoids > perfect number A perfect number P is equal to the sum of its divisors (where the divisors ... Every even perfect number... http://www users.cs.york.ac.uk/~susan/cyc/p/perfect.htm (Google,Yahoo! Search,Ask.com) 2. BBC h2g2 Perfect Numbers 22 Mar 2004 ... One of these categories was that of Perfect Numbers. ... Adding these gives 1 + 2 +... http://www.bbc.co.uk/dna/h2g2/A2136070 (Google,Yahoo! Search) 3. Perfect numbers A detailed history of the quest for perfect numbers, from Euclid to their present day Mersenne discoveri... http://www history.mcs.st and.ac.uk/HistTopics/Perfect_numbers.html... (Google) 4. Perfect number Wikipedia, the free encyclopedia In mathematics, a perfect number is defined as a positive integer which is the ... The first perfect... http://en.wikipedia.org/wiki/Perfect_number (Yahoo! Search) 5. Perfect numbers It is not known when perfect numbers were first studied and indeed the first ... A perfect number is... http://www history.mcs.st andrews.ac.uk/history/HistTopics/Perfect... (Yahoo! Search) 6. nrich.maths.org :: Mathematics Enrichment :: Can You Find a ... Can you find any perfect numbers? Read this article to find out more... ... 4 is not a perfect number... http://nrich.maths.org/public/viewer.php?obj_id=2555 (Google) 7. Perfect Number DiracDelta Science & Engineering Encyclopedia Perfect Number. A positive integer that is equal to the sum of its proper divisors. For example, 28... http://www.diracdelta.co.uk/science/source/p/e/perfect%20number/so... (Google) 8. perfect number: Definition from Answers.com perfect number n. A positive integer that is equal to the sum of its positive integral factors, ... The... http://www.answers.com/topic/perfect number (Yahoo! Search) 9. The Perfect Number Challenge | Resources | TES Instruction sheet for a short activity in which students try to find perfect numbers. http://www.tes.co.uk/article.aspx?storycode=3013487 (Google) 10. Perfect number In mathematics, a perfect number is defined as a positive integer which is the ... The first perfect... http://schools wikipedia.org/wp/p/Perfect_number.htm (Yahoo! Search) 11. Word Power Books | 5 is the Perfect Number Paperback by Igor Tuveri Spare, romantic, and surreal, 5 is the Perfect Number brings Italian magic realism to graphic novels... http://www.word power.co.uk/books/5 is the perfect number I9780224... (Google) 12. PerfectNumber Perfect number (English) ... Search for " Perfect number " in NRICH | PLUS | maths.org | Google... http://www.thesaurus.maths.org/dictionary/map/word/986 (Ask.com) 13. perfect number definition of perfect number by the Free Online ... Definition of perfect number in the Online Dictionary. Meaning of perfect number. Pronunciation of perfect... http://www.thefreedictionary.com/perfect+number (Ask.com) 14. Glossary: perfect number Definition of perfect number. ... A perfect number is an integer for which the sum of its proper divisor... http://www groups.dcs.st and.ac.uk/~history/Glossary/perfect_numbe... (Google) 15. Math Forum: Ask Dr. Math FAQ: Perfect Numbers What is a perfect number? ... How can you calculate a perfect number from a Mersenne prime? How can a... http://mathforum.org/dr.math/faq/faq.perfect.html (Yahoo! Search) 16. Perfect numbers Six is a number perfect in itself, and not because God created all things in six days; rather, the convers... http://www history.mcs.st andrews.ac.uk/HistTopics/Perfect_numbers... (Ask.com) 17. Perfect number Simple English Wikipedia, the free encyclopedia Six is the first perfect number. ... many assumptions about perfect numbers based on the ... The fifth... http://simple.wikipedia.org/wiki/Perfect_number (Yahoo! Search) 18. arnold perfect number plate for ARNOLD on eBay, also, Cherished ... Find arnold perfect number plate for ARNOLD in the , Cherished Numbers , Cars, Parts Vehicles category... http://cgi.ebay.co.uk/arnold perfect plate for ARNOLD_W0QQitemZ280... (Google) 19. Numbers: glossary Perfect numbers are quite rare. The first five are 6, 28, 496, 8128, 33550336 ... The tenth perfect... http://www.richardphillips.org.uk/number/gl/perfect.htm (Ask.com) 20. The Prime Glossary: perfect number This pages contains the entry titled 'perfect number.' Come explore a new prime term today! ... Prime... http://primes.utm.edu/glossary/page.php?sort=PerfectNumber (Yahoo! Search)