This number is a prime.

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The smallest prime concatenated from two primes p, q each formed from the concatenation of two consecutive numbers of form 10^n and 10^n-1, i.e., 109, (for n=1) and 10099 (for n=2). [Loungrides]

Submitted: 2017-04-11 06:17:33;   Last Modified: 2020-06-14 09:31:28.
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