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This number is a prime.
1234567*420^3418+1 is prime. 420 is the smallest number divisible by the numbers 1 through 7. Also, summing the factorials of the digits of 3418 produces the prime 40351, while summing the factorials of the digits of 1234567*420^3418+1 produces the prime 219770503. [Earls]
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