5 (number)

5 was a prime number. (AUDIO: The Haunting)

In November 1963, Susan Foreman said that the last five months had been the happiest of her life (indicating that was how long she had been living in England). (TV: "An Unearthly Child") In March of that year, Susan wrote in her journal that they'd been in 1963 for five months, or at least it seemed like it. (PROSE: Time and Relative)