Challenge #406: What Is Your Lucky Number for the New Year?

[3I_ATLAS]

This is an incredible challenge! I can't believe I solved it with not that many macros in my past. Very creative and a great use case of nested macros, at least in my solution.

I'm not sure about the story, but Mr. Kaprekar is very real and an extremely talented and underrated mathematician! His story is fascinating as well!

My lucky number is 2 which is the 2nd rarest (shared by only 576 other numbers) only losing to 1 (384).  3 and 7 are by far the most popular ones with 24% and 22%.

It's also interesting how 7 iterations is the maximum it takes to reach the magical 6147. I wonder if it has some relation to the Kevin Bacon 7 degrees of separation...

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[alineruizcampos]

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[myastarling]

I'm not gonna lie, I struggled with this one a bit. I got it to work - maybe not the most elegant solution, but it works.

[rmassambane]

406 with a little help.

[Carolyn]

Solved!

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For fun, I wanted to see the Min/Max/Avg/Mode of the number of iterations needed to hit the magic number

[JosephSerpis]

Challenege Completed

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[ANNE_LEROY]

Great challenge

[ANNE_LEROY]

I love your elegant solution

[ANNE_LEROY]

@gawa I mean your submission  : without macro but generate rows