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Questions  |  score: 1  |  Solved By 3863 People  |  91866 views  |  since Apr 07, 2008 - 01:22:52

Prime Factory (Training, Math)

Your task is simple:
Find the first two primes above 1 million, whose separate digit sums are also prime.
As example take 23, which is a prime whose digit sum, 5, is also prime.
The solution is the concatination of the two numbers,
Example: If the first number is 1,234,567
and the second is 8,765,432,
your solution is 12345678765432
Your solution for Prime Factory
Answer
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