What is the least common denominator of 143 and 208?

To find the least common denominator of 143 and 208, we need to first find the prime factors of each number. The prime factors of 143 are 11 and 13, while the prime factors of 208 are 2, 2, 2, 2, 13. The least common denominator is the product of all the prime factors with the highest power present in either number, which is 2^4 * 11 * 13 = 1144. Therefore, the least common denominator of 143 and 208 is 1144.