1979

This number is a prime.

In 1979, the young college student Curt Noll (now Landon Curt Noll) discovered the 26th Mersenne prime: 2²³²⁰⁹-1. [Caldwell]

The last emirp year for over a thousand years. [Young]

Margaret Thatcher was chosen to become Britain's first female prime minister on 5/3/1979, which was a prime month, prime day, and emirp year. [Green]

The Nova Vulgata was promulgated in 1979. [Stanley]

The smallest prime that remains prime for D = 0 to 3 in 1D9D7D9, producing the following four primes: 1090709, 1191719, 1292729, 1393739. [Rivera]

1979 dots makes an hourglass shape. [Reynolds]

Dr. Chris K. Caldwell, professor of mathematics and recipient of the Cunningham Outstanding Teacher/Scholar Award at the University of Tennessee at Martin, received his Bachelor of Science in mathematics from California State University at Hayward in 1979.

Smaller in the only pair of primes (p, q), each of which being concatenated from two double-digit primes ending with 9. [Loungrides]