**1315**= 5 x 263.

**1315**is the middle semiprime of a semiprime triple

*n*- 2,

*n*,

*n*+ 2: 1313, 1315, 1317.

**1315**is the concatenation of the sixth prime number (13) and the sixth lucky number (15).

The sum of the factorials of the digits of

**1315**is a power of 2: 1! + 3! + 1! + 5! = 128 = 2

^{7}.

**1315**is the sum of three consecutive primes:

**1315**= 433 + 439 + 443.

Source: On-Line Encyclopedia of Integer Sequences