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Flancian
2023-05-11 20:58:37 +02:00
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- 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.