perfect number

It is not known whether there are any odd perfect numbers.

Here we are, three, the perfect number, with a variety of talents and experience.

The perfect numbers would alternately end in 6 or 8.

If true, this would mean that there are no odd perfect numbers.

Note that perfect numbers are order two (2-perfect) by the same definition.

These first four perfect numbers were the only ones known to early Greek mathematics.

However, it remains open whether there exist any odd perfect numbers at all.

For the second assumption, the fifth perfect number indeed ends with a 6.

Almost a perfect number for folks who thought in sixes.

Johnson was working on the perfect number and had covered several sheets with calculations.

Note the following perfect numbers that are in the list:

Binary is a perfect number system for computers because their memory only has two states: on or off.

It is most notable for being a perfect number, and one of the earliest numbers to be recognized as such.

It is straightforward to show the last digit of any even perfect number must be 6 or 8.

Much later, Euler proved that all even perfect numbers are of this form.

Besides, as all good dramatists know, five is the perfect number for a cast.

His contributions to number theory includes his work on perfect numbers.

Editors sweat to find the perfect number, but admit there is no formula.

Gradually mathematicians found further perfect numbers (which are very rare).

Today the term "perfect number" is merely historic in nature, used for the sake of tradition.

Ancient mathematicians made many assumptions about perfect numbers based on the four they knew.

One young woman who had just had her first child told me: "Three is a perfect number.

"Being sixth is a perfect number for us," Medearis said.

What would be the perfect number for you?

Almost perfect numbers are also known as least deficient numbers.