Return true if the input is a Smith number in base ten. Otherwise, return false. Read about Smith numbers at http://en.wikipedia.org/wiki/Smith_number.
A Smith number must be positive and have more than one factor.
Add two numbers
Implement simple rotation cypher
Find vampire numbers
Check that number is whole number
Split up vector or matrix delimited by NaNs
Get input and output variable names
Test within tolerance
Remove TeX from string
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