This number is a prime.

                                                               46 3479467461

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+ The first prime formed from the set of four consecutive primes ending with 1, 3, 7, 9. Note that the set of these primes, (461, 463, 467, 479), is not a prime quadruplet. Note also that any concatenation of the terms of a prime quadruplet is divided by 3 so it is not prime. [Loungrides]

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