
Building a Python CLI that reveals 200+ number theory properties of integers
Hi everyone, For the past few months I’ve been building a personal project called NumClass: a Python CLI tool that analyzes an integer and classifies it into a large set of number-theory properties. The idea started as a small experiment inspired by the YouTube channel Numberphile, but it quickly got out of hand and now supports 200+ classifiers. Examples of things it can detect: • perfect / abundant / weird numbers • Mersenne primes and primorial numbers • amicable, sociable and aspiring numbers (aliquot sequences) • Carmichael numbers and other pseudoprimes • narcissistic, Kaprekar and happy numbers • palindromic and truncatable primes • taxicab numbers (Hardy–Ramanujan style cube sums) • Fibonacci, Lucas, Pell and Padovan numbers • triangular, pentagonal and other figurate numbers • strange curiosities like Belphegor’s prime, vampire numbers and Munchausen numbers The current version contains 205 atomic classifiers plus 27 intersections (232 properties in total). Example output: Som
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