In test suite problem 25, there seems to be an issue with the question mark after 'Africa'. The word Africa itself is a prime word, but the solution marks it as non-prime. Since the question mark is usually considered punctuation, I treated it as a space.
Thanks William. I fixed the test (and my own code).
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Generate pi using logarithm
nth Rational Number
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Convert a number from factorial notation to base 10
Determine whether a number is unprimeable
Count numbers whose reciprocals' decimal expansions terminate
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