Prime Curios!: 64

64
(another Prime Pages' Curiosity)

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If you consider the alphabet as an extension of the decimal system (base 36), the difference in the numerically expressed words SIXTY and FOUR is equal to 47180851, which is prime. [Nothdurft]

The number 2⁶⁴ + 1 was factored by Landry in 1880. [Kraitchik]

Using A = 1, B = 2, ..., Z = 26, the sum of all the letter values in the word names of the numbers from 1 to 64 is a prime (7369). If 0 (whose alpha-numeric value is 64) is included, the sum is yet another prime (7433). [Trotter]

The smallest power of 2 with no prime neighbor. [Necula]