761
This number is a prime.
A sequence of six 9's (known as the Feynman Point) begins immediately after the 761st decimal place of π. Nobel prize-winning physicist Richard Feynman expressed a wish to memorize the digits of π as far as that point so that when reciting them, he would be able to end with "... nine, nine, nine, nine, nine, nine, and so on."
761 = prime(761) - (7!2 * 6!2 * 1!2). Note that 761 is the smallest prime with this property. [Firoozbakht]
761 = (π(7!) + π(6!) + π(1!)) - (π(7!2) + π(6!2) + π(1!2))). Note that prime 761 is the only number with this property. [Firoozbakht]
The sum of all the prime numbers up to seventy-nine.
The emirp number of lines in Homer's Ro Rhapsody of Iliad. [Loungrides]
The number of possible games in Go is a one followed by 761
zeros (OMNI, June 1991). [Beavers]
The only 3-digit prime number of the form 12k+5 which does
not have 3 as a primitive root. [Nie]