American Flag Prime

The following prime number looks like a black-and-white image of an American flag.

The number mostly consists of the digits 1, 3, and 8, but there are a few 9's. The following image colors the 8's blue, the 3's red, and the 1's white. The background is gray so you can see the 1s.

I found this in [1]. The article includes a link to a text version of the number, but the link is broken, so I had to convert the image to text.

Unfortunately tesseractdid a poor job, and so did Grok, so I ended up more or less doing the conversion by hand. I made a text version and posted it here.

See the next post for a calculation showing that the number is indeed prime.

[1] The United States of America Prime. Vadim Ponomarenko. Math Horizons, Vol. 28, No. 4 (April 2021)

The post American Flag Prime first appeared on John D. Cook.