### Instruction: What is the smallest odd number with four different prime factors?### Response: I want to find an odd number that is the product of four different prime factors.
Since it has to be odd, none of the prime factors can be 2.
So I want to use the smallest odd prime numbers, which are 3, 5, 7, and 11.
Multiplying them together, I get 3 x 5 x 7 x 11 = 1155.
This is the smallest odd number with four different prime factors.