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1000000001159 (another Prime Pages' Curiosity) |
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Smallest emirp with emirp number of digits and emirp sum of digits. 1000000001159 is prime, and R(1000000001159) =
951100000000 is prime, and sod(1000000001159) = 17 is
prime, and R(17) = 71 is prime, and 13 digits in length is
prime and R(13) = 31 is prime. [Post]
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