The natural number sequence 1, 2, 3, 4, 5, 6, ... is eliminated. The principle of elimination is: all natural numbers that cannot be expressed as the sum of two composite numbers are eliminated, such as "1" should be eliminated, but 12 Yes; if it is written as the sum of two composite numbers 8 and 4, it should not be eliminated, so what is the 2002nd number of the retained numbers from small to large.
对自然数列1，2，3，4，5，6，…进行淘汰，淘汰的原则是：凡不能表示为两个合数之和的自然数均被淘汰，如"1"应被淘汰，但12可以；写成两个合数8与4的和，不应被淘汰，那么被保留下来的数从小到大数下去，第2002个数是多少．
<gadget id="calculator">2_002 - 2</gadget>
<output>2_000</output>

<gadget id="calculator">2_000 - 1</gadget>
<output>1_999</output>

<gadget id="calculator">1_999 * 1</gadget>
<output>1_999</output>

<gadget id="calculator">12 + 1_999</gadget>
<output>2_011</output>

<result>2_011</result>