Or simply the product of the first two (prime) numbers is 6. Similarly we have 10 fingers and we like base 10, but for time we prefer something which is "bette

Or simply the product of the first two (prime) numbers is 6. Similarly we have 10 fingers and we like base 10, but for time we prefer something which is "better dividible" (pardon my english), i.e. 3x4x5 = 60.