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Added type hints and doctest for maths/prime_check. (#2367)

* Added type hints and doctest for maths/prime_check.

* Removed doctests.
B
Björn Olsson Jarl committed
ab5a046581cb8f765dbe2e57e4429b1a22d649be
Parent: f2f0425
Committed by GitHub <noreply@github.com> on 8/29/2020, 3:11:02 PM