The new $100 bills include security features designed to thwart counterfeiters.
They still feature Franklin, one of only two people on a US bank note  who was never president of the country. (He was many other things, among  them an author, scientist, diplomat, politician, composer, inventor,  and newspaper editor; the only profession he 
chose to list on his epitaph  was, fittingly enough, “printer.”) 
Franklin’s collar is now festooned  with “The United States of America” in tiny lettering, and another,  ghostly visage of him appears when the bill is held up to light.
Nearly 80% of all US currency is denominated in $100 bills. There were more than 
820 million Ben Franklins out in the world at the end of last year, making it the most popular bank note, by value, among the world’s major currencies. (
Here are the circulation figures for the euro; the €50 note is the currency’s most popular by quantity and value.
 
A large portion of hundreds are held outside the United States, often shipped abroad by the Fed in 
pallets worth $64 million each ,  though the exact percentage is a matter of debate. The bills are  popular among traffickers of drugs and weapons and are also used in  unstable economies as a reliable store of value.