The inputs $A_3,A_2,A_1,$ and $A_0$ represent a number from $0$ to $15.$

Output $P$ should be $1$ if the number is Prime $(0$ and $1$ are not prime, but $2,3,5,$ and so on$,$ are Prime$).$

Output $D$ should be $1$ if the number is divisible by $3.$

Give simplified Boolean equations for each output and draw the circuit.