From d5993b865791c7eb9eb3d3184e51dc6ca0aa5f5a Mon Sep 17 00:00:00 2001
From: Flancian <0@flancia.org>
Date: Thu, 11 May 2023 20:58:37 +0200
Subject: [PATCH] autopushed

---
 406.md | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/406.md b/406.md
index 60599aae3..e8cc61eda 100644
--- a/406.md
+++ b/406.md
@@ -1,2 +1,4 @@
 - Significantly harder to factor than [[405]], which I find interesting.
+- I think the fact that 405 and 406 are adjacent in the number line and have wildly differing difficulties of factorization probably says something about the nature of numbers? analyzing this fact can probably lead to interesting relations
 - [[203]] * 2 but then I'm stumped, 203 could be a prime. I hope it is, maybe?
+- It's clearly not divisible by 3 if you already checked [[406]] (sum of digits 10, not divisible by 3), but I still checked out of custom. While doing this, remembering which numbers you don't have to check is useful as it prevents duplicate work. Still I'm not concerned about repeating checks because I enjoy them.