1) The largest integer that is not a sum of distinct powers.
2)The only perfect number of the form x to the nth + y to the nth
3)The number of days in a lunar cycle.
4) The cube root of this number is one more than the smallest prime.
5) The factor of every palindrome with an even number of digits.
6) The first of two consecutive numbers whose factors have the same sum.
7) The lease number of moves in the Tower of Hanoi puzzle with 5 disks
8) One of the two numbers that can be both the perimeter and the area of the same rectangle
9) A number n where if the sum of the digits of the number is divisible by n, then the number itself is divisible by n
10) One of the four number where n! has n digits
11) The only number whose spelling contains the same number of letters as the number itself.
Please help with any or all you may know!
2007-01-15
06:49:25
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10 answers
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asked by
umpalumpas_rock
1
in
Mathematics