1901

This number is a prime.

In baseball, the American League started its first season in the prime year of 1901. [Wolfe]

The only known living relative of the giraffe, the okapi was first described to western science by P. L. Sclater in 1901. [Patterson]

Psychiatrist Dr. Frasier Crane's door number on the popular television sitcom Frasier. It corresponds to the year Sigmund Freud published The Psychopathology of Everyday Life. [Rupinski]

1901 = 1&13 + 2&12 + 3&11 + 4&10 + 5&9 + 6&8 + 7&7 + 8&6 + 9&5 + 10&4 + 11&3 + 12&2 + 13&1, where & denotes concatenation. [Poo Sung]

The largest prime in the smallest bemirp quadruple.

The SAT Reasoning Test (formerly Scholastic Aptitude Test and Scholastic Assessment Test) was introduced in 1901.

The Nobel Prizes were first awarded in 1901. [Gupta]

The Y2K38 Millennium Bug anticipates the roll-over event of year 2038 being misinterpreted rather as the bemirp year 1901 by computers once the 32-bit Unix operating system for time encoding in seconds is overflowed. [Beedassy]

1901 Group was founded as an IT managed service provider with headquarters in Reston, VA. [Olds]

"1901" is a song by French indie pop band Phoenix. [Moulin]