1303

This number is a prime.

Pope Boniface VIII, author of the bull Unam Sanctam ("One Holy") stating all salvation is dependent on obedience to the Pope, died in 1303.

The smallest of three prime factors of the sphenic number 3474749660383 (the smallest composite number to be a strong probable prime to base 2, 3, 5, 7, 11 and 13).

"Apartment 1303" is a modern ghost story which turns a love hate relationship between mother and daughter into a tale of horror. [Olry]

Chu Shï-kié's book "Ssu Yuan Yü Chien" (Precious Mirror of the Four Elements), was written in AD 1303. [Wampler]