Eleven Numbers

by Lee Child

The State Department has determined that due to escalating international tensions, travel to your destination may not be safe and is not advised.

The third man was Oliver Bailey, the greatest living American mathematician.

The fourth man in the room was the president of the United States.

“John McGinn, my national security advisor. Matthew Cash, the NSA director.

Math was abstract and eternal, unchanging, discovered not invented, but when human beings used it, they always left a fingerprint.

Kindansky numbers. They’re all prime numbers, but not all prime numbers are Kindanskys.”

Internal calculations with Kindansky numbers tend to be fast and robust. Useful for high-stress situations where speed is critical.