Some time ago I created a program to generate a table, and printed the first seven rows and columns.
Somehow however I forgot to print the headers and the title of the table.
I only remember that it was about smallest numbers, and thus numbers like 2190090 appearing seemed surprising.

If I just remembered what 'smallest number' 2190090 is, I might be able to make a nice puzzle out of it for stack exchange. However, I also have bad memory, so could you please help me?

What 'smallest number' is 2190090 according to the table below?

1 X X X X X X
16 2 X X X X X
2 24 18 6 X X X
4 6 12 360 30 150 X
2 18 6 30 60 123480 1210230
4 24 30 150 90 244230 2190090
2 6 12 150 22260 2940 86100
  • $\begingroup$ This, this and this all look a bit relevant. They seem to point to arithmetic progressions of prime numbers. All numbers in the table are quite smooth - which might be a consequence of being common differences of arithmetic progressions of prime numbers. $\endgroup$
    – WhatsUp
    Commented Nov 10, 2021 at 16:47


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