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A comment on Black Hat Talk About ‘Time AI’ Causes Uproar, Is Deleted by Conference. Parent comment

Re:Black Hat Talk About ‘Time AI’ Causes Uproar, Is Deleted ... by thaumasiotes on Sunday August 11, 2019 @09:26AM (#20668076)
> Checking for 9 might be easier in decimal

It isn't. The test is the same in both cases.

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Re:Black Hat Talk About ‘Time AI’ Causes Uproar, Is Deleted ... by rurban on Sunday August 11, 2019 @09:50AM (#20668162)
It is. The sum of decimals is much faster than the modulo.
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Re:Black Hat Talk About ‘Time AI’ Causes Uproar, Is Deleted ... by thaumasiotes on Sunday August 11, 2019 @06:17PM (#20670900)
Huh? You need modulus either way. n is zero (mod 3) iff its digit sum is zero (mod 3), and it's zero (mod 9) iff its digit sum is zero (mod 9).
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