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Show HN: Prime Number Grid Visualizer

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Re: Show HN: Prime Number Grid Visualizer

#51

Post by BrandoElFollito » Mon, Aug 18, 2025, 8:05 PM UTC

vismit2000 wrote: post #32

Reminds of https://www.3blue1brown.com/lessons/prime-spirals

I was about to post that too. The 3b1b post really goes into the reasons why this happens (as usual) butvalso shows there is no m1gic in math (which I am not sure is a good thing or not)

Re: Show HN: Prime Number Grid Visualizer

#52

Post by ljsprague » Tue, Aug 19, 2025, 4:49 AM UTC

eps wrote: post #45

ljsprague wrote: post #18

Earlier quoted context omitted.

I think you'll find this to be the case with any prime.

Not really. There are almost always clearly visible diagonals. Try 199, 211, 223, etc.

You're right. I guess then it comes down to how far away from a composite it is.

Re: Show HN: Prime Number Grid Visualizer

#53

Post by Towaway69 » Tue, Aug 19, 2025, 3:39 PM UTC

The first thing I thought of was why not add the QR markers (i.e. the three squares) and then see if a prime grid is scannable.

Perhaps a prime grid will generate a valid QR code that is itself a prime number in QR!

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