1,001,000,000,001,000,001,001,002,568
one octillion, one septillion, one quadrillion, one billion, one million, two thousand, five hundred sixty-eight

The above number consists of 23 of the 26 letters of the English alphabet. The following is a list of the smallest cardinal numbers (greater than zero) where the letter occurs:
a - [one] thousand
b - [one] billion
c - [one] octillion
d - [one] hundred
e - one
f - four
g - eight
h - three
i - five
j - *
k - *
l - eleven
m - [one] million
n - one
o - one
p - [one] septillion
q - [one] quadrillion
r - three
s - six
t - two
u - four
v - five
w - two
x - six
y - twenty
z - *

* No non-hyperbolic cardinal number in its standard constructed English name consists of j, k, or (but for zero) z.

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