500 billion thought moments

500,000,000,000
The above number is 500 billion, representing the number of thought moments that may arise and perish in the blink of an eye. This is from the Abhidhamma basket of the scriptures where analysis was taken down to such a minute / sub-atomic level. 
==References==
*The Complete Book of Buddha's Lists -- Explained. David N. Snyder, Ph.D., 2006.
*http://www.thedhamma.com/
Category:Buddha's Lists