Perfect numbers are numbers whose proper divisors (the divisors except for the number itself) add up to the number itself. The first four perfect numbers, 6, 28, 496, and 8128 have been known since ancient times.
6 = 1 + 2 + 3
28 = 1 + 2 + 4 + 7 + 14
At least 46 perfect numbers had been discovered before the end of 2008. A link to a listing of perfect numbers is provided below.
perfect nos. follow the mathematical formula: 2^(p-1)*[2^(p)-1]
I don't believe that 50 perfect numbers have ever been found, last time I checked there were only about 47 known perfect numbers. It would also require an extremely powerful computer.
No, there are no known perfect numbers between 1 and 30. The only perfect numbers that have been discovered are 6, 28, 496, and 8128.
So far, no odd perfect numbers have been found to exist. If and only if one does exist, it will be far larger than the number in the question. In fact, it has been proven concretely that if an odd perfect number exists, it is greater than 10^300, and it is conjectured that if such a number exists, it is greater than 10^500.
6 and 28 are perfect numbers.
there are no perfect numbers instead there are perfect cubes, perfect squares, natural numbers, whole numbers, integers, rational numbers, irrational numbers, and real numbers. If you want natural no. they are 21, 22, 23, 24, 25, 26, 27, 28, and 29.
Yes, as has been known since 1588 For a list of all known perfect numbers see the related link.
No. The only perfect numbers less than 100 are 6 and 28. All known perfect numbers are even - it is unknown whether there are odd perfect numbers.
81. They are the perfect squares of numbers starting from 5.81. They are the perfect squares of numbers starting from 5.81. They are the perfect squares of numbers starting from 5.81. They are the perfect squares of numbers starting from 5.
6, 28, 496 and 8128 are the first four Perfect numbers.
By definition, ALL perfect squares are whole numbers!
Natural numbers which are the scales of some natural numbers are perfect squares
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