Online registration is closed for this event. If available, tickets on the day of the event may incur an additional charge.

How could there be something we don't know about arithmetic — didn't we learn it all in third grade?  But here’s a problem whose solution we don’t know: What is the fastest way to multiply? And another: How many different numbers appear in a large multiplication table? Dartmouth mathematician Carl Pomerance reveals the hidden mysteries of multiplication and addition in this surprising reexamination of grade-school math.

Special introduction by Cathy O’Neil, data scientist and author of upcoming book, Weapons of Math Destruction.

Click here to register for the 7 pm lecture. 

Math Encounters is a public presentation series celebrating the spectacular world of mathematics and presented by the Simons Foundation and the National Museum of Mathematics.

For further information, call the National Museum of Mathematics at (212) 542-0566 or e-mail

Please note, this presentation is designed to be accessible and engaging to a general audience. As a rule of thumb, it would be best enjoyed by participants age 12 and up.

Please check our online shop for books by Math Encounters presenters.

June 1, 2016 4:00 pm   through   5:30 pm
National Museum of Mathematics
11 East 26th Street
New York, NY 10010
United States
Phone: 212-542-0566