The numbers 125 and 329 can be written as the sum of a prime and a power of 2. For example, 
, and 
. The numbers 127 and 331, which are examples of de Polignac numbers, cannot be written in this way.
, and . The numbers 127 and 331, which are examples of de Polignac numbers, cannot be written in this way.Write a function that determines whether an odd number is a de Polignac number.
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