presented a heuristic argument which suggests that no odd perfect numbers exist. [1]...Ancient mathematicians made many assumptions about perfect numbers based on the four they knew....project to search for odd perfect...

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The Grolier Multimedia Encyclopedia says that perfect numbers are "another example of Greek progress in number...After reading up on how known perfect numbers relate to Mersenne Prime Numbers, ...and eleventh perfect numbers were found...

extend the student activity Have students find additional perfect numbers using their preferred method....• Definition of perfect numbers • Completed table with three new perfect...working on defining and determining perfect numbers through this...

Spoof Perfect Numbers such that you suppose incorrectly that two factors are primes 3...completely spoof perfect numbers or at least bounds below which such a number can not exist...David and Shyam to find more odd spoof perfect numbers...

A place for advanced teen physicists to discuss any topic of physics other science/math issues.

Perfect numbers and Mersenne numbers...Visit Britannica Store number game Perfect numbers and Mersenne numbers...A perfect number is an integer that equals the sum of its proper divisors....

Carlos Rivera's collection of problems and puzzles related to prime numbers.

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An extensively hyperlinked collection of facts, ideas, notes and humor to which anyone can add.

An extensively hyperlinked collection of facts, ideas, notes and humor to which anyone can add.

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One of the largest and most diverse collections of puzzles, riddles and brainteasers on the internet.

Focusing on the philosophy of the subject, collects philosophical essays and texts from other related disciplines.

Perfect numbers are those numbers that equal the sum of all their divisors including 1 and excluding the number...Let's examine the number 496 - one of the known perfect numbers....