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There is a formula, which uses Mersenne primes. If you don't know what that is, then you'll find it somewhere on the internet. The formula is this: 2n-1 x (2n-1) This will only work if the bit inside the bracket is a Mersenne prime. =)

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Q: How do you calculate a perfect number?
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Related questions

Is 2934 a square?

Try it out! For example, you can use a calculator to calculate the number's square root. If you get a whole number - no decimals - then the number is a perfect square.


What number should be added to a number to get a perfect square?

Because numbers are infinite, there is an infinite number of answers. e.g. What number should be added to 2 to make a perfect square? 2+2=4 (a perfect square) 2+7=9 (a perfect square) 2+14=16 (a perfect square) 2+23=25 (a perfect square) etc... Did you have a specific number in mind.


Is 8128 a perfect number?

There is a formula to calculate even perfect numbers, 2p-1(2p - 1) where p is a prime number. When p = 7 then 26(27 - 1) = 64 x 127 = 8128 So 8128 is the 4th perfect number. (The other three occur when p = 2, 3 and 5)


What is the sum of the first perfect number and the second perfect number?

The sum of the 1st perfect number and 2nd perfect number is. . . 34!


What is it called when a number has a whole number square root?

Then the number is called a "perfect square".Then the number is called a "perfect square".Then the number is called a "perfect square".Then the number is called a "perfect square".


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If by 'perfect number' you mean 'perfect SQUARE', then yes. 49 is an odd number and a perfect square.


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496 is the third perfect number and 8128 is the fourth perfect number.


What is the largest 3-digit square number?

The largest 3-digit number - not itself a perfect square - is 999. Calculate its square root, round the answer down, then square the answer again.


What number is both a square number and a cube number between 1 and 25?

There is not a number that is a perfect square and perfect cube between 1 and 25.There is not a number that is a perfect square and perfect cube between 1 and 25.There is not a number that is a perfect square and perfect cube between 1 and 25.There is not a number that is a perfect square and perfect cube between 1 and 25.


Is 28 a perfect number?

Yes it is. 6 is the first perfect number, 28 is the second perfect number.


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