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 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 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 Apéry’s Constant Binary Lambda Calculus Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> 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 ALGOL 68 APL ArkScript 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 ><> 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 ALGOL 68 APL ArkScript 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 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 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 Apéry’s Constant Binary Lambda Calculus Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 158th KasperKivimaeki 🇫🇮 857 93 17ms 30 Nov 2025 158th blaztoma 🇱🇹 857 93 18ms 18 Dec 2025 163rd stefangimmillaro 857 139 282ms 3 Oct 2024 164th ovs-code 🇩🇪 856 46 4ms 4 Oct 2024 164th nwellnhof 🇩🇪 856 46 4ms 7 Oct 2024 166th edsrzf 🇳🇿 856 90 118ms 18 Dec 2025 167th m-tkach 🇺🇦 855 87 7ms 6 Oct 2024 168th sean-niemann 🇺🇸 854 56 36ms 8 Aug 2025 169th JayXon 🇺🇸 853 95 445ms 4 Oct 2024 170th sean-niemann 🇺🇸 852 51 2ms 2 Oct 2024 171st MostParsingVex 850 100 1,024ms 1 Oct 2024 172nd error256 849 106 85ms 8 Oct 2024 173rd edsrzf 🇳🇿 849 110 467ms 3 hours ago 174th kg583 🇺🇸 849 143 40ms 8 hours ago 175th emgordon154 848 67 1,283ms 18 Nov 2024 176th DialFrost 🇸🇬 848 94 18ms 1 Oct 2024 176th ndren 848 94 16ms 14 Feb 2025 178th primo-ppcg 🇹🇭 846 128 41ms 27 Apr 2025 179th lynn 846 131 138ms 8 Jan 2025 180th KasperKivimaeki 🇫🇮 845 141 294ms 9 Oct 2025 181st error256 844 94 2ms 7 Oct 2024 182nd KasperKivimaeki 🇫🇮 844 103 396ms 8 Dec 2025 183rd IanUtley 844 113 20ms 2 Oct 2024 184th sean-niemann 🇺🇸 844 114 41ms 2 Oct 2024 185th m-tkach 🇺🇦 842 144 79ms 8 Oct 2024 186th nwellnhof 🇩🇪 841 84 2ms 2 Oct 2024 186th ovs-code 🇩🇪 841 84 1ms 2 Nov 2024 186th inventshah 841 84 2ms 31 Mar 2025 189th kg583 🇺🇸 840 86 4ms 8 hours ago 190th sean-niemann 🇺🇸 840 121 2ms 30 Nov 2024 191st xsot 🇸🇬 839 57 38ms 6 May 2025 192nd moustave 839 95 20ms 4 Nov 2024 192nd emgordon154 839 95 17ms 18 Nov 2024 194th emplv 🇱🇻 839 142 295ms 2 Oct 2024 194th sean-niemann 🇺🇸 839 142 302ms 2 Oct 2024 196th GrayJoKing 🇦🇺 838 47 4ms 1 Oct 2024 196th Steffan153 🇫🇮 838 47 5ms 3 days ago 198th edsrzf 🇳🇿 838 131 28ms 10 days ago 199th snoozingnewt 🇨🇦 837 92 106ms 18 Dec 2025 200th JayXon 🇺🇸 837 109 1,368ms 5 Oct 2024 201st kg583 🇺🇸 837 113 8ms 9 hours ago 202nd stefangimmillaro 836 68 1,290ms 2 Oct 2024 203rd Shanethegamer 🇺🇸 836 77 11ms 1 Oct 2024 203rd edsrzf 🇳🇿 836 77 13ms 10 May 2025 203rd biocommando 🇫🇮 836 77 11ms 13 Jun 2025 206th sean-niemann 🇺🇸 836 81 10ms 20 Dec 2024 206th Steffan153 🇫🇮 836 81 12ms 9 days ago 208th emplv 🇱🇻 836 145 25ms 24 Oct 2024 209th edsrzf 🇳🇿 835 115 3ms 19 Dec 2025 210th stefangimmillaro 834 80 2,338ms 12 Nov 2024 211th edsrzf 🇳🇿 833 108 82ms 26 Jul 2025 212th stefangimmillaro 833 112 140ms 4 Oct 2024 213th MeWhenI 🇻🇦 833 130 40ms 3 Oct 2024 214th edsrzf 🇳🇿 833 133 154ms 19 Dec 2025 215th MeWhenI 🇻🇦 833 143 304ms 2 Oct 2024 216th ovs-code 🇩🇪 833 200 1,401ms 19 Apr 2025 217th JayXon 🇺🇸 832 155 1,904ms 3 Oct 2024 218th saito-ta 🇯🇵 831 85 1ms 1 Oct 2024 219th emplv 🇱🇻 830 77 134ms 28 Mar 2025 220th MeWhenI 🇻🇦 830 96 17ms 30 Jul 2025 221st kg583 🇺🇸 828 80 384ms 7 hours ago 222nd nwellnhof 🇩🇪 828 105 390ms 22 Jan 2026 223rd m-tkach 🇺🇦 825 58 39ms 8 Oct 2024 224th dcgjb 825 78 11ms 6 May 2025 225th stefangimmillaro 825 99 109ms 3 Oct 2024 226th retrohun 824 71 9ms 10 Jan 2025 227th DialFrost 🇸🇬 822 82 103ms 23 Jun 2025 228th plcc0 822 97 17ms 12 Jan 2026 229th primo-ppcg 🇹🇭 822 232 525ms 13 Aug 2025 230th sean-niemann 🇺🇸 820 48 4ms 9 Aug 2025 231st ovs-code 🇩🇪 820 65 5ms 30 Oct 2024 232nd ovs-code 🇩🇪 820 106 394ms 1 Oct 2024 232nd inventshah 820 106 391ms 1 Oct 2024 234th edsrzf 🇳🇿 820 148 47ms 5 hours ago 235th MeWhenI 🇻🇦 819 114 470ms 7 Nov 2025 236th frosster 🇨🇦 818 97 2ms 9 days ago 237th MeWhenI 🇻🇦 817 92 10ms 24 Dec 2024 238th MeWhenI 🇻🇦 817 104 1,025ms 2 Oct 2024 239th canissimia 🇦🇶 817 130 3ms 4 Oct 2024 240th MeWhenI 🇻🇦 817 186 14ms 2 Oct 2024 First Prev 161–240 of 891 Next Last