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Also, five is not "the perfect number for a cast."

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

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

The perfect numbers would alternately end in 6 or 8.

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

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

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

Every even perfect number ends in 6 or 28, base ten.

The next perfect number is 496, the previous being 6.

It is unknown whether there are any odd perfect numbers.