• Three is the first odd prime number, and the second smallest positive prime. Three is the first unique prime due to the properties of its reciprocal.
  • Three is the second triangular number and it is the only prime triangular number. Three is the only prime which is one less than a perfect square.
  • Three non-collinear points determine a plane and a circle.
  • Three is the fourth Fibonacci number and the third that is unique.
  • Vulgar fractions with 3 in the denominator have a single digit repeating sequences in their decimal expansions, (.000…, .333…, .666…, .999…)
  • A triangle is the most durable shape possible, the only “perfect” figure which if all endpoints have hinges will never change its shape unless the sides themselves are bent.
  • 3 is the only integer between e and π.
  • Only three tetrahedral numbers are also perfect squares. (Click here for more information on the number 3.)
  • Three is the number of years we have been together. Looks like we are triangle material. Love you.

Can you say “Hello dimples?!”

:::snickering quietly to self:::

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