https://ashk.in/blog Personal blog https://ashk.in/blog/kaprekar-6174 https://ashk.in/blog/kaprekar-6174 Sat, 18 Jul 2026 17:42:19 GMT Pick a 4-digit number, sort its digits high and low, subtract, repeat. You always land on 6174 — usually in exactly seven steps. A small Python experiment with NumPy and Seaborn. https://ashk.in/blog/first-post https://ashk.in/blog/first-post Sun, 28 Jun 2026 08:57:00 GMT