The character of prime numbers, their specific features – such as being divisible only by themselves, seems a physical element of prime numbers. An element that, independently of my own biases, is a distinguishable element of certain numbers.
With that independence in mind, it seemed curious to learn that there are some illegal primes. Seemingly unlike the independent character of primes, illegal prime are actually dependent upon laws, their reasoning – at times – and political, rather than numerical, values.
Perhaps it can be argued that there are politics, indeed cultural biases – with recognising the category of primes. However, even in that view, the character of the numbers is different to the legal character of some primes.. Perhaps a “legal-character” could in itself be of certain number sets? (eg a list of all illegal numbers is a set..)
Might be interesting..(?)