Julian Bonilla

Really Big Numbers

I always forget the names of really big numbers. What do you call 1,000,000,000,000,000? It’s one quadrillion. What about 1,000,000,000,000,000,000,000,000,000,000,000,000? One undecillion.

Checkout this cool directive to the format function in Common Lisp.

(format nil "~r" 1606938044258990275541962092)

Which produces this string:

one octillion six hundred six septillion nine hundred thirty-eight sextillion forty-four quintillion two hundred fifty-eight quadrillion nine hundred ninety trillion two hundred seventy-five billion five hundred forty-one million nine hundred sixty-two thousand ninety-two.