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Card Number Validation in all languages in bytes. Achievements Cheevos Holes Languages Medals Miscellaneous All Holes 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Gray Code Decoder Gray Code Encoder Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Multitap Input Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Dragon Curve Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Nim Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig 05AB1E APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> ALGOL 68 ArkScript Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig Experimental Language 05AB1E APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Hole All 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Gray Code Decoder Gray Code Encoder Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Multitap Input Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Dragon Curve Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Nim Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 200th edsrzf 🇳🇿 849 131 168ms 26 Mar 2026 202nd kg583 🇺🇸 847 84 5ms 26 Mar 2026 203rd sean-niemann 🇺🇸 847 121 2ms 30 Nov 2024 203rd edsrzf 🇳🇿 847 121 3ms 21 Feb 2026 205th KasperKivimaeki 🇫🇮 847 141 311ms 9 Oct 2025 206th emplv 🇱🇻 847 145 28ms 24 Oct 2024 207th error256 845 94 2ms 7 Oct 2024 208th KasperKivimaeki 🇫🇮 845 103 435ms 8 Dec 2025 209th edsrzf 🇳🇿 845 131 28ms 10 Feb 2026 210th nwellnhof 🇩🇪 843 84 2ms 2 Oct 2024 210th ovs-code 🇩🇪 843 84 1ms 2 Nov 2024 210th inventshah 843 84 2ms 31 Mar 2025 213th edsrzf 🇳🇿 843 115 3ms 19 Dec 2025 214th GrayJoKing 🇦🇺 841 47 5ms 1 Oct 2024 214th Steffan153 🇫🇮 841 47 4ms 16 Feb 2026 216th xsot 🇸🇬 841 57 38ms 6 May 2025 217th kg583 🇺🇸 841 113 6ms 20 Feb 2026 218th emplv 🇱🇻 841 142 324ms 2 Oct 2024 218th sean-niemann 🇺🇸 841 142 332ms 2 Oct 2024 220th edsrzf 🇳🇿 840 83 121ms 21 Feb 2026 221st moustave 840 95 23ms 4 Nov 2024 221st emgordon154 840 95 18ms 18 Nov 2024 223rd stefangimmillaro 838 68 1,313ms 2 Oct 2024 224th Shanethegamer 🇺🇸 838 77 13ms 1 Oct 2024 224th biocommando 🇫🇮 838 77 11ms 13 Jun 2025 226th sean-niemann 🇺🇸 838 81 10ms 20 Dec 2024 226th Steffan153 🇫🇮 838 81 11ms 11 Feb 2026 228th edsrzf 🇳🇿 838 108 1,581ms 11 days ago 229th stefangimmillaro 838 112 156ms 4 Oct 2024 230th MeWhenI 🇻🇦 838 130 40ms 3 Oct 2024 231st edsrzf 🇳🇿 837 108 88ms 26 Jul 2025 232nd stefangimmillaro 836 80 2,477ms 12 Nov 2024 233rd edsrzf 🇳🇿 836 139 37ms 11 days ago 234th MeWhenI 🇻🇦 835 143 340ms 2 Oct 2024 235th emplv 🇱🇻 833 77 131ms 28 Mar 2025 236th saito-ta 🇯🇵 833 85 1ms 1 Oct 2024 237th ovs-code 🇩🇪 833 200 1,204ms 19 Apr 2025 238th MeWhenI 🇻🇦 831 96 17ms 30 Jul 2025 239th kg583 🇺🇸 830 80 457ms 20 Feb 2026 240th primo-ppcg 🇹🇭 830 232 525ms 13 Aug 2025 241st nwellnhof 🇩🇪 829 105 444ms 22 Jan 2026 242nd DialFrost 🇸🇬 828 82 111ms 23 Jun 2025 243rd stefangimmillaro 828 99 128ms 3 Oct 2024 244th dcgjb 827 78 11ms 6 May 2025 245th JayXon 🇺🇸 827 186 1,687ms 11 days ago 246th m-tkach 🇺🇦 826 58 43ms 8 Oct 2024 247th GrayJoKing 🇦🇺 826 101 7ms 27 Feb 2026 248th ovs-code 🇩🇪 824 65 5ms 30 Oct 2024 249th retrohun 824 71 9ms 10 Jan 2025 250th MeWhenI 🇻🇦 824 104 19ms 2 Oct 2024 251st sean-niemann 🇺🇸 823 48 4ms 9 Aug 2025 252nd plcc0 823 97 18ms 12 Jan 2026 253rd MeWhenI 🇻🇦 822 92 12ms 24 Dec 2024 254th albanian-laundromat 🇺🇸 822 118 4ms 11 Dec 2025 255th MeWhenI 🇻🇦 821 85 2ms 5 Oct 2024 255th albanian-laundromat 🇺🇸 821 85 2ms 15 days ago 257th ovs-code 🇩🇪 821 106 439ms 1 Oct 2024 257th inventshah 821 106 420ms 1 Oct 2024 259th MeWhenI 🇻🇦 820 85 110ms 4 Oct 2024 260th MeWhenI 🇻🇦 820 114 540ms 7 Nov 2025 261st frosster 🇨🇦 819 97 2ms 11 Feb 2026 262nd sisyphus-ppcg 🇦🇺 818 83 10ms 2 Oct 2024 263rd Shanethegamer 🇺🇸 817 69 322ms 2 Oct 2024 264th canissimia 🇦🇶 817 130 3ms 4 Oct 2024 265th MeWhenI 🇻🇦 817 186 17ms 2 Oct 2024 266th lifthrasiir 🇰🇷 815 197 9ms 19 Dec 2024 267th Shanethegamer 🇺🇸 814 70 1,560ms 9 Apr 2025 268th GolfingSuccess 🇬🇷 814 98 18ms 5 Oct 2024 268th albanian-laundromat 🇺🇸 814 98 18ms 3 Nov 2025 270th sean-niemann 🇺🇸 813 115 484ms 24 Sep 2025 270th stefangimmillaro 813 115 724ms 6 Oct 2025 272nd stefangimmillaro 813 126 2ms 3 Oct 2024 273rd stefangimmillaro 813 134 41ms 3 Oct 2024 274th emgordon154 813 205 1,206ms 7 Mar 2025 275th jusaka 812 35 3ms 14 days ago 276th Natanaelel 🇸🇪 812 59 38ms 7 Feb 2025 277th CLOStrophobic 🇮🇹 811 119 6ms 24 Feb 2025 278th sean-niemann 🇺🇸 810 82 473ms 23 Dec 2024 279th DialFrost 🇸🇬 808 106 25ms 23 Mar 2025 280th ovs-code 🇩🇪 808 119 15ms 1 Oct 2024 281st albanian-laundromat 🇺🇸 808 120 42ms 3 Nov 2025 282nd edsrzf 🇳🇿 807 104 443ms 21 Feb 2026 283rd MeWhenI 🇻🇦 807 127 2ms 5 Oct 2024 283rd albanian-laundromat 🇺🇸 807 127 3ms 3 Nov 2025 285th albanian-laundromat 🇺🇸 807 148 352ms 3 Dec 2025 286th GolfingSuccess 🇬🇷 806 31 79ms 5 Oct 2024 287th antimon2 🇯🇵 806 70 541ms 9 Oct 2024 288th trinityy-7 806 80 11ms 23 Jul 2025 289th SirBogman 🇺🇸 806 99 17ms 8 Oct 2024 289th solisolu 806 99 22ms 13 Mar 2026 289th BrunoVisnadi 🇧🇷 806 99 16ms 22 Mar 2026 292nd error256 806 116 451ms 24 Sep 2025 293rd Shanethegamer 🇺🇸 806 138 142ms 3 Oct 2024 294th Shanethegamer 🇺🇸 805 102 451ms 4 Oct 2024 295th MeWhenI 🇻🇦 804 88 1ms 2 Oct 2024 296th stefangimmillaro 804 89 459ms 4 Oct 2024 297th GrayJoKing 🇦🇺 803 58 6ms 24 Oct 2024 298th anter69 🇭🇺 803 71 1,471ms 25 Feb 2026 299th sean-niemann 🇺🇸 803 92 158ms 1 Oct 2025 300th m-tkach 🇺🇦 803 138 29ms 3 Oct 2024 First Prev 201–300 of 1,012 Next Last