The Reveal Shell and The Square of the next Prime Number

The first interesting feature I call the reveal shell, which is the shell whose polygon number is the product of a series of proceeding prime numbers. For the 3 shell this is 3×2×1=6. When we put the reveal shell in place, and skirt around the inside of the shell anticlockwise from the positive horizontal abscissa, the next prime number in the sequence of prime numbers is revealed where there is no exclusion line. Prime numbers up to the current shell (the 3 shell) are excluded, they are already in place, towards the centre. For some reason the 1 always comes out, but the next number that is not occluded by an exclusion line is the next prime number. This number is 5, Figure 8 .