Numbers

Names for integer numbers in United States American (USA) English.

• −2 = negative two
• −1 = negative one
• 0 = zero
• 1 = one
• 2 = two
• 3 = three
• 4 = four
• 5 = five
• 6 = six
• 7 = seven
• 8 = eight
• 9 = nine
• 10 = ten
• 11 = eleven
• 12 = twelve
• 13 = thirteen
• 14 = fourteen
• 15 = fifteen
• 16 = sixteen
• 17 = seventeen
• 18 = eighteen
• 19 = nineteen
• 20 = twenty
• 21 = twenty-one
• 22 = twenty-two
• 23 = twenty-three
• 24 = twenty-four
• 25 = twenty-five
• 26 = twenty-six
• 27 = twenty-seven
• 28 = twenty-eight
• 29 = twenty-nine
• 30 = thirty
• 31 = thirty-one
• 32 = thirty-two
• 33 = thirty-three
• 34 = thirty-four
• 35 = thirty-five
• 36 = thirty-six
• 37 = thirty-seven
• 38 = thirty-eight
• 39 = thirty-nine

• 40 = forty
• 50 = fifty
• 60 = sixty
• 70 = seventy
• 80 = eighty
• 90 = ninety

• 100 = one hundred
• 200 = two hundred
• 300 = three hundred
• 400 = four hundred
• 500 = five hundred
• 600 = six hundred
• 700 = seven hundred
• 800 = eight hundred
• 900 = nine hundred

PowerShell

The above table was created using the following Microsoft PowerShell script.

# & "C:\Nicole\web\scripts\numbers.ps1"

$numbers = @{
1 = "thousand"
2 = "million"
3 = "billion"
4 = "trillion"
5 = "quadrillion"
6 = "quintillion"
7 = "sextillion"
8 = "septillion"
9 = "octillion"
10 = "nonillion"
11 = "decillion"
21 = "vigintillion"
31 = "trigintillion"
41 = "quadragintillion"
51 = "quinquagintillion"
61 = "sexagintillion"
71 = "septuagintillion"
81 = "octogintillion"
91 = "nonagintillion"
101 = "centillion"
111 = "decicentillion"
121 = "viginticentillion"
131 = "trigintacentillion"
141 = "quadragintacentillion"
151 = "quinquagintacentillion"
161 = "sexagintacentillion"
171 = "septuagintacentillion"
181 = "octogintacentillion"
191 = "nonagintacentillion"
}

$number_prefixes = @("" , "un" , "duo" , "tre" , "quattuor" , "quin" , "sex" , "septen" , "octo" , "novem")

function get_name_from_power {
param([int] $n)
if ($numbers.ContainsKey($n)) { return $numbers[$n] }
$remainder = $n % 10
if ($remainder -eq 1) { return $numbers[$n] }
if ($remainder -eq 0) { $remainder = 10 }
$base = $n - $remainder + 1
$prefix_index = $n - $base
return ($number_prefixes[$prefix_index] + $numbers[$base]) -replace "oo" , "o"
}

function get_full_name_from_power {
param([int] $n)
if ($n -le 200) { return get_name_from_power $n }
$base = 200
$base_name = get_name_from_power $base
$offset = $n - $base
if ($offset -eq $base) { return "$base_name $base_name" }
$multiplier = get_name_from_power $offset
return "$multiplier $base_name"
}

$lines = @()
for ($n = 1 ; $n -le 400 ; $n += 1) {
$x = $n * 3
$name = get_full_name_from_power $n
$lines += ("<tr><td>1000<sup>{0}</sup></td><td>10<sup>{1}</sup></td><td>{2}</td></tr>" -f $n , $x , $name)
}
$lines -join "`n" | Set-Content "$PSScriptRoot\numbers.txt"

# A script to generate names for integer numbers.

# © (Copyright) 2026-05-03 Nicole Sharp (NicoleSharp.net).
# Nicole Sharp’s Homepage: https://www.nicolesharp.net/

# This script is available under the Creative Commons Attribution-ShareAlike 4.0 International Public License (CC BY-SA 4.0): https://www.creativecommons.org/licenses/by-sa/4.0/

# Written by Nicole Sharp with the assistance of Microsoft Copilot Chat Generative Pretrained Transformer (ChatGPT): https://copilot.microsoft.com/

references

1. Wiktionary: "English Numerals"
2. Wiktionary: "Very Large Numbers"
3. Wikipedia: "Names of Large Numbers"
4. Wiktionary: "Latin Numerals"