Trigintillion, often cited as a word in discussions of names of large numbers, is not included in any of them, nor are any of the names that can easily be created by extending the naming pattern unvigintillion, duovigintillion, duoquinquagintillion, etc.
The words bymillion and trimillion appeared for the first time in a 1475 manuscript of Jehan Adam.
Incorrect: Add seventy-three 73 grams of sodium chloride to the beaker.
If you've got any suggestions, or if there's any errors in the word-form of the numbers, please let me know! It's worth noting that there are often a few different possible names which can be used for the same number.
Take a look at our blog for the answer! When expressing decades using figures, it is simpler to put an apostrophe before the incomplete numeral and no apostrophe between the number and the s.