Their work revives long-standing mathematical curiosities but does so through a fresh window – additive combinatorics.

The longest series of this kind known at present consists of forty prime numbers. It begins with 41, 43, 47, 53 … and ends with … 1373, 1447,1523,1601, a truly extraordinary sequence.

During the unveiling, Lesufi said the government fleet management vehicles will be fitted with the new number plates as part of the six-month pilot project, before a provincial rollout.