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 error256 858 75 9ms 7 Oct 2024 162nd Bulmenisaurus 857 93 17ms 6 Oct 2024 162nd lynn 857 93 16ms 8 Jan 2025 162nd CornerMercury 🇬🇧 857 93 16ms 23 Nov 2025 162nd KasperKivimaeki 🇫🇮 857 93 17ms 30 Nov 2025 162nd blaztoma 🇱🇹 857 93 18ms 18 Dec 2025 167th stefangimmillaro 857 139 282ms 3 Oct 2024 168th ovs-code 🇩🇪 856 46 4ms 4 Oct 2024 168th nwellnhof 🇩🇪 856 46 4ms 7 Oct 2024 170th edsrzf 🇳🇿 856 90 118ms 18 Dec 2025 171st m-tkach 🇺🇦 855 87 7ms 6 Oct 2024 172nd sean-niemann 🇺🇸 854 56 36ms 8 Aug 2025 173rd JayXon 🇺🇸 853 95 445ms 4 Oct 2024 174th sean-niemann 🇺🇸 852 51 2ms 2 Oct 2024 175th MostParsingVex 850 100 1,024ms 1 Oct 2024 176th error256 849 106 85ms 8 Oct 2024 177th kg583 🇺🇸 849 143 40ms 33 hours ago 178th emgordon154 848 67 1,283ms 18 Nov 2024 179th DialFrost 🇸🇬 848 94 18ms 1 Oct 2024 179th ndren 848 94 16ms 14 Feb 2025 181st primo-ppcg 🇹🇭 846 128 41ms 27 Apr 2025 182nd lynn 846 131 138ms 8 Jan 2025 183rd KasperKivimaeki 🇫🇮 845 141 294ms 9 Oct 2025 184th error256 844 94 2ms 7 Oct 2024 185th KasperKivimaeki 🇫🇮 844 103 396ms 8 Dec 2025 186th IanUtley 844 113 20ms 2 Oct 2024 187th sean-niemann 🇺🇸 844 114 41ms 2 Oct 2024 188th sean-niemann 🇺🇸 844 121 2ms 30 Nov 2024 188th edsrzf 🇳🇿 844 121 3ms 13 hours ago 190th m-tkach 🇺🇦 842 144 79ms 8 Oct 2024 191st nwellnhof 🇩🇪 841 84 2ms 2 Oct 2024 191st ovs-code 🇩🇪 841 84 1ms 2 Nov 2024 191st inventshah 841 84 2ms 31 Mar 2025 194th kg583 🇺🇸 840 86 4ms 34 hours ago 195th xsot 🇸🇬 839 57 38ms 6 May 2025 196th moustave 839 95 20ms 4 Nov 2024 196th emgordon154 839 95 17ms 18 Nov 2024 198th emplv 🇱🇻 839 142 295ms 2 Oct 2024 198th sean-niemann 🇺🇸 839 142 302ms 2 Oct 2024 200th GrayJoKing 🇦🇺 838 47 4ms 1 Oct 2024 200th Steffan153 🇫🇮 838 47 5ms 4 days ago 202nd edsrzf 🇳🇿 838 131 28ms 11 days ago 203rd edsrzf 🇳🇿 837 83 102ms 4 hours ago 204th snoozingnewt 🇨🇦 837 92 106ms 18 Dec 2025 205th JayXon 🇺🇸 837 109 1,368ms 5 Oct 2024 206th kg583 🇺🇸 837 113 8ms 34 hours ago 207th stefangimmillaro 836 68 1,290ms 2 Oct 2024 208th Shanethegamer 🇺🇸 836 77 11ms 1 Oct 2024 208th biocommando 🇫🇮 836 77 11ms 13 Jun 2025 210th sean-niemann 🇺🇸 836 81 10ms 20 Dec 2024 210th Steffan153 🇫🇮 836 81 12ms 10 days ago 212th emplv 🇱🇻 836 145 25ms 24 Oct 2024 213th edsrzf 🇳🇿 835 115 3ms 19 Dec 2025 214th stefangimmillaro 834 80 2,338ms 12 Nov 2024 215th edsrzf 🇳🇿 833 108 82ms 26 Jul 2025 216th stefangimmillaro 833 112 140ms 4 Oct 2024 217th MeWhenI 🇻🇦 833 130 40ms 3 Oct 2024 218th edsrzf 🇳🇿 833 133 154ms 19 Dec 2025 219th MeWhenI 🇻🇦 833 143 304ms 2 Oct 2024 220th ovs-code 🇩🇪 833 200 1,401ms 19 Apr 2025 221st JayXon 🇺🇸 832 155 1,904ms 3 Oct 2024 222nd saito-ta 🇯🇵 831 85 1ms 1 Oct 2024 223rd emplv 🇱🇻 830 77 134ms 28 Mar 2025 224th MeWhenI 🇻🇦 830 96 17ms 30 Jul 2025 225th kg583 🇺🇸 829 80 384ms 33 hours ago 226th nwellnhof 🇩🇪 828 105 390ms 22 Jan 2026 227th m-tkach 🇺🇦 825 58 39ms 8 Oct 2024 228th dcgjb 825 78 11ms 6 May 2025 229th stefangimmillaro 825 99 109ms 3 Oct 2024 230th retrohun 824 71 9ms 10 Jan 2025 231st DialFrost 🇸🇬 822 82 103ms 23 Jun 2025 232nd plcc0 822 97 17ms 12 Jan 2026 233rd primo-ppcg 🇹🇭 822 232 525ms 13 Aug 2025 234th sean-niemann 🇺🇸 820 48 4ms 9 Aug 2025 235th ovs-code 🇩🇪 820 65 5ms 30 Oct 2024 236th ovs-code 🇩🇪 820 106 394ms 1 Oct 2024 236th inventshah 820 106 391ms 1 Oct 2024 238th edsrzf 🇳🇿 820 148 47ms 30 hours ago 239th MeWhenI 🇻🇦 819 114 470ms 7 Nov 2025 240th frosster 🇨🇦 818 97 2ms 10 days ago First Prev 161–240 of 895 Next Last