If the natural numbers P, 2P+1, and 4P+1 are all prime numbers, then what is 8P**5+55=?
若自然数P，2P+1，4P+1都是质数，那么，8P**5+55=多少．
<gadget id="calculator">3 ** 5</gadget>
<output>243</output>

<gadget id="calculator">8 * 243</gadget>
<output>1_944</output>

<gadget id="calculator">1_944 + 55</gadget>
<output>1_999</output>

<result>1_999</result>