Historic And Pleasing Properties Of Perfect Numbers

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Perfect numbers were studied in ancient times for their historic and pleasing properties (Why are perfect numbers important?). Also, “some ancient cultures gave mystic interpretations to numbers that they thought were magic” (Knoderer). The Pythagoreans associated perfect numbers with health and marriage. Perfect numbers have been studied since the early Greek time and maybe even earlier than that.
By definition, a perfect number is a positive number where its divisors add up to the number not including the number itself. For example the number six can be divided by one, two, and three. One, two, and three add up to six. The next perfect number is twenty-eight. Its divisors are one, two, four, seven, and fourteen. (Diagram 3) They add up to twenty-eight. All perfect numbers are also triangular (Perfect Numbers). This means that you would get a triangular number if you add another row of dots to that triangle (Perfect Numbers). If you keep adding dots to the triangles you will get perfect numbers. (Diagram 2) Perfect numbers are also associated with …show more content…

Any odd perfect numbers would also have to be more than 101500 (Crisman). Every even perfect number that we know of ends in a six or eight. All perfect numbers follow a pattern (Osborn). After the number one there is a series of powers of two, then a prime number (Osborn). Take twenty-eight for example, its divisors are one, two, four, seven, and fourteen. One is two to the zeroth, two is two to the first, four is two squared and then there is seven the prime number. Euclid showed that if 2p−1 is prime then (2p−1)2p−1 is perfect. To find a perfect number from a prime number you would take the prime number and multiply it by the first number before it. For example take the prime number thirty-one. Its factors are one, two, four, eight, and sixteen. Then you would take thirty-one and sixteen and multiply them to get four hundred and ninety-six which is a perfect

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