Word: quinquinquagintillion Part of Speech: num Etymology: From quin- + quinquagintillion. 1. 10¹⁶⁸. Labels: rare Example: The correct answer is: 1836239000203040034250246621435242410100352052020620341413572572562452413011204205245248562476247624924924682346724875913948275247646824359245123423852456842875248584567456727138413447564562523459225924724564672858272772752757257278572572752475723457257275177312347246534 Which is: One novemoctogintillion, eight hundred thirty-six octooctogintillion, two hundred thirty-nine septoctogintillion, two hundred three quinoctogintillion, forty quattuoroctogintillion, thirty-four treoctogintillion, two hundred fifty duooctogintillion, two hundred forty-six unoctogintillion, six hundred twenty-one octogintillion, four hundred thirty-five novemseptuagintillion, two hundred forty-two octoseptuagintillion, four hundred ten septseptuagintillion, one hundred sexseptuagintillion, three hundred fifty-two quinseptuagintillion, fifty-two quattuorseptuagintillion, twenty treseptuagintillion, six hundred twenty duoseptuagintillion, three hundred forty-one unseptuagintillion, four hundred thirteen septuagintillion, five hundred seventy-two novemsexagintillion, five hundred seventy-two octosexagintillion, five hundred sixty-two septsexagintillion, four hundred fifty-two sexsexagintillion, four hundred thirteen quinsexagintillion, eleven quattuorsexagintillion, two hundred four tresexagintillion, two hundred five duosexagintillion, two hundred forty-five unsexagintillion, two hundred forty-eight sexagintillion, five hundred sixty-two novemquinquagintillion, four hundred seventy-six octoquinquagintillion, two hundred forty-seven septenquinquagintillion, six hundred twenty-four sexquinquagintillion, nine hundred twenty-four quinquinquagintillion, nine hundred twenty-four quattuorquinquagintillion, six hundred eighty-two trequinquagintillion, three hundred forty-six duoquinquagintillion, seven hundred twenty-four unquinquagintillion, eight hundred seventy-five quinquagintillion, nine hundred thirteen novemquadragintillion, nine hundred forty-eight octoquadragintillion, two hundred seventy-five septenquadragintillion, two hundred forty-seven sexquadragintillion, six hundred forty-six quinquadragintillion, eight hundred twenty-four quattuorquadragintillion, three hundred fifty-nine trequadragintillion, two hundred forty-five duoquadragintillion, one hundred twenty-three unquadragintillion, four hundred twenty-three quadragintillion, eight hundred fifty-two novemtrigintillion, four hundred fifty-six octotrigintillion, eight hundred forty-two septentrigintillion, eight hundred seventy-five sextrigintillion, two hundred forty-eight quintrigintillion, five hundred eighty-four quattuortrigintillion, five hundred sixty-seven tretrigintillion, four hundred fifty-six duotrigintillion, seven hundred twenty-seven untrigintillion, one hundred thirty-eight trigintillion, four hundred thirteen novemvigintillion, four hundred forty-seven octovigintillion, five hundred sixty-four septenvigintillion, five hundred sixty-two sexvigintillion, five hundred twenty-three quinvigintillion, four hundred fifty-nine quattuorvigintillion, two hundred twenty-five trevigintillion, nine hundred twenty-four duovigintillion, seven hundred twenty-four unvigintillion, five hundred sixty-four vigintillion, six hundred seventy-two novemdecillion, eight hundred fifty-eight octodecillion, two hundred seventy-two septendecillion, seven hundred seventy-two sexdecillion, seven hundred fifty-two quindecillion, seven hundred fifty-seven quattuordecillion, two hundred fifty-seven tredecillion, two hundred seventy-eight duodecillion, five hundred seventy-two undecillion, five hundred seventy-two decillion, seven hundred fifty-two nonillion, four hundred seventy-five octillion, seven hundred twenty-three septillion, four hundred fifty-seven sextillion, two hundred fifty-seven quintillion, two hundred seventy-five quadrillion, one hundred seventy-seven trillion, three hundred twelve billion, three hundred forty-seven million, two hundred forty-six thousand, five hundred thirty-four Example: The upshot is that a chess player is faced with an average of 35 choices for each move. Go averages 250 options. This figure is known as a problem's "branching factor," and it is a bane of AI. If you multiply 250 by itself enough times -- to evaluate possible responses, counter-responses, and so forth -- you quickly arrive at a number of positions much greater than the number of atoms in the universe, which would take all of the world's computers well over a million years to map out. In fact, it wasn't even until last year that anyone managed to actually calculate how many. (It's about 2.081681994 x 10^170. Or, in plain English, two hundred quinquinquagintillion.)