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This number is a prime.
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After 1 and 2, n=317 is the smallest case in which n divides the prime index (6974) of the nth Honaker prime (70379). [Gaydos]
317 of the first thousand prime numbers have no digits in common with their prime indices. [Gaydos]
(There is one curio for this number that has not yet been approved by an editor.)
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