nth-prime: Add topics to resolve #845
nth-prime: Add topics to resolve #845


exercism/xpython,smalley/python,N-Parsons/exercism-python,smalley/python,pheanex/xpython,behrtam/xpython,behrtam/xpython,jmluy/xpython,exercism/python,N-Parsons/exercism-python,mweb/python,pheanex/xpython,exercism/python,jmluy/xpython,exercism/xpython,mweb/python