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

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14,199
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12,963
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22 / 108 Holes

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26 / 58 Langs

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23 / 75 Cheevos

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Prime Numbers in JavaScript in Chars Play Hole

203rd in JavaScript and 2,471st overall.

Last tested .

Bytes Chars Submitted
57 57