The smallest prime that is the sum of the first consecutive prime triangular numbers with prime indices. [Rupinski]
The number of reversible primes below one hundred thousand. [Beedassy]
The last time Halley's Comet passed through its perihelion in a prime year was 1759.
The year George and Martha were married. He would
later go on to become the first President of what was to
become the United States of America. [Green]
The first prime concatenated from an emirp index of a prime p and p itself. [Loungrides]