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6, 28, 496 and 8128 are the first four Perfect numbers.

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Q: What numbers are perfect?
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Related questions

Perfect numbers between 20 and 30?

There are no perfect numbers between 20 and 30. Perfect numbers are numbers that are equal to the sum of their proper divisors, excluding the number itself. The perfect numbers within this range would be 28, but that is incorrect as 28 is not a perfect number.


What are example of perfect numbers?

6 and 28 are perfect numbers.


What are the perfect numbers up to 100?

Oh, perfect numbers are like little treasures in the world of math! Up to 100, we have two perfect numbers: 6 and 28. A perfect number is when all its divisors (except itself) add up to the number, creating a harmonious balance in the mathematical universe. Just like adding a happy little tree to a painting, perfect numbers bring a sense of symmetry and beauty to the world of numbers.


Is 31 a perfect number?

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.


What is the next number in the sequence 25 36 49 64?

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.


Are no perfect squares whole numbers?

By definition, ALL perfect squares are whole numbers!


Perfect squares?

Natural numbers which are the scales of some natural numbers are perfect squares


Are any of the numbers from 2 to 5 perfect?

No. The first two "perfect numbers" are 6 and 28.


What are all perfect numbers?

There are infinitely many perfect numbers so they cannot all be listed.


What are some other perfect numbers?

Other than what? The first perfect numbers are 6 and 28.


How many perfect numbers are there?

There is no way to determine the amount of perfect numbers there are. The number could be infinite, but this has yet to be proven. It has also yet to be proven if there are any odd perfect numbers.


Are there more mersenne primes known as there are perfect numbers?

There is a one-to-one relationship between even perfect numbers and Mersenne primes. It is unknown whether there are any odd perfect numbers.