946 = 2 x 11 x 43.
946 is the 43rd
triangular number (
A000217). It is the sum of all integers from 1 to 43.
946 is also a
hexagonal number (
A000384), a centered nonagonal number, and a
hexagonal pyramidal number (
A002412).
946 is the only three-digit number such that the reversal of the concatenation of the first
946 natural numbers is a prime.
946 is 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.
Source:
Prime Curios!
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