The Kaprekar Numbers hole will go live in . Why not try and solve it ahead of time?

alexsave

13,088
12,936
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20 / 109 Holes

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1 / 59 Langs

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11 / 76 Cheevos

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Card Number Validation in JavaScript in Bytes Play Hole

35th in JavaScript and 334th overall.

Last tested .

Bytes Chars Submitted
90 90
92 92
93 93
95 95
98 98
100 100
103 103
107 107
109 109
112 112
121 121
123 123
125 125
142 142
146 146
152 152
154 154
160 160
162 162
163 163
164 164
170 170
180 180
181 181
189 189