Which of the following bases is the weakest?

Question

1)(CH3)2NH , Kb = 5.1 x 10–4

2)ClO–, Kb = 2.9 x 10–7

3)SO42–, Kb = 8.3 x 10–13

Im thinking the answer is 2, but im not100%

Answer 1

the larger Kb, the stronger. Isn't 1 the larger Kb? The weakest, 3.
check my thinking