The Card Number Validation hole will go live in . Why not try and solve it ahead of time?

gfaster

3,816
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3,733
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6 / 108 Holes

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2 / 58 Langs

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7 / 75 Cheevos

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Pernicious Numbers in Python in Bytes Play Hole

374th in Python and 1,750th overall.

Last tested .

Bytes Chars Submitted
74 74