Among the two integers a and b, all prime factors of a are 2, 3, 5, 7, 11, and all prime factors of b are 2, 3, 13, so what is the greatest common factor of a and b
在a与b两个整数中，a的所有质因数2、3、5、7、11，b的所有质因数是2、3、13，那么a与b的最大公因数是多少
<gadget id="calculator">2 * 3</gadget>
<output>6</output>

<result>6</result>