This number is a prime.

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(1783, 8317) is the first of only two pairs of primes concatenated from two complementary double-digit primes (17, 83). The 2nd pair is (2971, 7129). [Loungrides]

Submitted: 2011-07-22 08:38:29;   Last Modified: 2018-02-28 06:05:22.
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