Fun with num3ers
Thursday, February 24, 2011
Filzian number
A
Filzian number
is a positive integer that is equal to sum
of its digits times the product of its digits.
For example,
(1 + 3 + 5) * 1 * 3 * 5 = 135
(1 + 4 + 4) * 1 * 4 * 4 = 144
(a) Find another one
(b) Find a general solution
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