If the perimeter of a rectangle is 36 meters and its length and width are prime numbers, what is the maximum area of the rectangle in square meters?
一个长方形的周长是36米，它的长和宽均是质数，那么这个长方形的面积最大是多少平方米．
<gadget id="calculator">11 * 7</gadget>
<output>77</output>

<result>77</result>