143 = 11 x 13.
143 is the smallest brilliant number whose reversal, 341, is a different brilliant number.
143 is an aspiring number.
The last 143 digits of 143143 form a prime number.
143 is the number of three-digit primes.
Every positive integer is the sum of at most 143 seventh powers.
1432 is a divisor of 143143.
143 is the sum of three consecutive primes and the sum of seven consecutive primes: 143 = 43 + 47 + 53 = 11 + 13 + 17 + 19 + 23 + 29 + 31.
Source: Number Gossip