The highest number recognized by orthodox mathematics is the Centillion. Any number higher than a Centillion is considered an unimaginable abstraction belonging to the realm of infinity.

Here is a list from greatest to least in value:

 Googolplex is 10 to the power of googol zeros
    (ex. 10 to the power of 10 to the power of 100)
 Centillion has 303 zeros 
    (except in Britain, where it has 600 zeros)
 Googol has 100 zeros.
 Vigintillion has 63 zeros
 Novemdecillion has 60 zeros
 Octodecillion has 57 zeros
 Septendecillion has 54 zeros
 Sexdecillion has 51 zeros
 Quindecillion has 48 zeros
 Quattuordecillion has 45 zeros
 Tredecillion has 42 zeros
 Duodecillion has 39 zeros
 Undecillion has 36 zeros
 Decillion has 33 zeros
 Nonillion has 30 zeros
 Octillion has 27 zeros
 Septillion has 24 zeros
 Sextillion has 21 zeros
 Quintillion has 18 zeros
 Quadrillion has 15 zeros
 Trillion has 12 zeros
 Billion has 9 zeros
 Million has 6 zeros

---

The Incas and certain other pre Columbian tribes in Peru developed the Decimal System hundreds of years before it was used in Europe.

---

Michael Cameron, 20, from Canada proved 2^13,466,917-1 is prime on November 14, 2001. Although this prime took only a few weeks on his 800 MHz AMD computer, it took nearly two and half years and tens of thousands of computers for the GIMPS project to test well over 100,000 unsuccessful candidates. Congratulations to Michael and every GIMPS contributor for their part in this remarkable find.

---

At 12:34 on May 6, 1978, there was a peculiar lining up of dates and hours that will not happen again until the year 2078. On that day the numbers in the hour 12:34 were followed by the number Sequence of the month, day, and year for May 6, 1978, which reads 5/6/78. The resulting Sequence was 12345678.

---