They used the fact that 21 = 7 x 3 in order to reduce gate-count. The full-Shor has never been run on a hardware device IIRC. (quite-funny when you see everyo

They used the fact that 21 = 7 x 3 in order to reduce gate-count. The full-Shor has never been run on a hardware device IIRC. (quite-funny when you see everyone and their mom hyping QC).