Carmichael Number with 4 Prime Factors/Mistake

Source Work

 * The Dictionary
 * $41,041$
 * $41,041$

Mistake

 * The smallest Carmichael number with $4$ factors. It equals $7 \times 11 \times 13 \times 41$.

It should say:
 * The smallest Carmichael number with $4$ prime factors.