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This number is a prime.
Single Curio View: (Seek other curios for this number)The prime whose reversal factors into the two extremal primes with only the four prime digits: 17731711 = 2357*7523. Note that the latter primes concatenate to another prime (23577523) that remains a prime when each digit is replaced by its complement (87533587). [Beedassy]
Submitted: 2009-07-22 05:51:09; Last Modified: 2009-07-22 08:14:25.
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