What is the least common multiple of 65 and 104?

To find the least common multiple (LCM) of 65 and 104, we first need to find the prime factorization of each number. The prime factorization of 65 is 5 x 13, and the prime factorization of 104 is 2^3 x 13. To calculate the LCM, we take the highest power of each prime factor that appears in either factorization, which gives us 2^3 x 5 x 13 = 520. Therefore, the least common multiple of 65 and 104 is 520.