317

This number is a prime.

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The number of ones that form the fourth repunit prime. It was first proven prime by Hugh C. Williams in 1977. [Dobb]

317 = (-3)³ + 1³ + 7³. [Dobb]

317# - 1 is a primorial prime. [Dobb]

The giant statue of Buddha in the lamasery of Yung-Ling, China, doubles as an object of veneration and a library containing 317 volumes of Tibetan classics. [Dobb]

The artist Norman Rockwell painted 317 covers for "Saturday Evening Post" magazine. [Dobb]