On Thursday, March 14, Blaze Pizza will celebrate Pi Day by unlocking the world’s largest pizza party, serving up custom built, artisanal pizzas for just $3.14 each at the company’s more than 314 locations. This year marks the sixth straight edition of Blaze Pizza’s Pi Day celebration, with guests across the US, Canada and abroad expected to join in the celebration, forming lines out the doors, as has been the case in years past.

This year’s special $3.14 Pi Day deal is open to anyone who has the Blaze Pizza app.  Beginning on March 4, Blaze app users will receive a special Pi Day reward in their account, though it will be “locked” and not yet available for use. (For those downloading the app between March 4 through March 14, the reward will appear immediately after downloading). The reward will be “unlocked” the morning of March 14th, signaling to the company’s more than one-million app users that the world’s largest pizza party has begun and they should calculate the route to their nearest Blaze.

“Math gives us a blueprint to solve a problem, whether simple or complex.  It’s with that same spirit that Blaze Pizza was founded—qto solve the important problem of how to get an insanely great, scratch-made pizza that’s both fast and affordable,” says Jim Mizes, president and CEO. “This year, we calculated that we will serve more than a quarter million pizzas at $3.14. We look forward to having Blaze fans across the US and Canada come in to celebrate with us.”

All Blaze Pizza locations in the U.S., Canada and Middle East are participating except sites at Disney Springs, Houston Airport, Los Angeles’ Staples Center, George-Mason University and UCLA. The Pi Day celebration will extend to Blaze Pizza’s international restaurants as well, with each country outside of the US and Canada using their own local approach to celebrate this unconventional math holiday.