# 946

This number is a composite.

946 is the only three-digit number *m* such that the reversal
of concatenation of the first *m* natural numbers is prime. [Firoozbakht]

The largest known number *n* such that *n* is the sum of two consecutive primes but not the sum of two sums of two
consecutive primes. [Capelle]

(There are 2 curios for this number that have not yet been approved by an editor.)

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