The length and width of a rectangle are both prime numbers, and the circumference is 36 cm. What is the maximum area of the rectangle in square centimeters?
一个长方形的长和宽均为质数，并且周长是36厘米，这个长方形的面积最多可以是多少平方厘米？
<gadget id="calculator">11 * 7</gadget>
<output>77</output>

<result>77</result>