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 81st error256 893 60 1,103ms 19 days ago 82nd nwellnhof 🇩🇪 892 80 459ms 2 Oct 2024 82nd Yax42 🇫🇷 892 80 464ms 7 Feb 2025 84th ovs-code 🇩🇪 891 63 524ms 2 Oct 2024 85th rucin93 🇵🇱 890 78 2ms 18 Nov 2025 85th JayXon 🇺🇸 890 78 2ms 19 Nov 2025 85th sean-niemann 🇺🇸 890 78 2ms 19 Nov 2025 85th edsrzf 🇳🇿 890 78 2ms 15 hours ago 85th Steffan153 🇫🇮 890 78 2ms 12 hours ago 90th GrayJoKing 🇦🇺 889 60 4ms 3 Oct 2024 91st nwellnhof 🇩🇪 889 105 627ms 25 Sep 2025 92nd JayXon 🇺🇸 889 134 289ms 3 Oct 2024 93rd MeWhenI 🇻🇦 888 64 1,305ms 3 Oct 2024 94th kgolf 887 32 3ms 15 Apr 2025 95th MeWhenI 🇻🇦 886 54 35ms 3 Oct 2024 95th error256 886 54 36ms 7 Oct 2024 95th nwellnhof 🇩🇪 886 54 37ms 13 Oct 2024 98th canissimia 🇦🇶 886 66 8ms 1 Oct 2024 99th nwellnhof 🇩🇪 886 90 20ms 1 Oct 2024 99th ovs-code 🇩🇪 886 90 17ms 3 Oct 2024 99th kg583 🇺🇸 886 90 16ms 9 Oct 2024 99th sean-niemann 🇺🇸 886 90 20ms 23 Dec 2024 99th firegene 🇮🇪 886 90 16ms 43 hours ago 104th Steffan153 🇫🇮 885 65 779ms 4 days ago 105th lyphyser 883 41 51ms 1 Oct 2024 106th nwellnhof 🇩🇪 883 135 290ms 16 Oct 2024 106th edsrzf 🇳🇿 883 135 272ms 86 mins ago 108th dmrichwa 🇺🇸 882 73 12ms 5 Oct 2024 108th DialFrost 🇸🇬 882 73 10ms 12 Oct 2024 110th GrayJoKing 🇦🇺 881 90 2ms 3 Oct 2024 110th FlyingPenguin223 881 90 2ms 16 Oct 2024 112th acotis 880 106 144ms 29 May 2025 113th JayXon 🇺🇸 879 79 129ms 17 Oct 2024 114th ovs-code 🇩🇪 878 69 4ms 4 Oct 2024 114th edsrzf 🇳🇿 878 69 4ms 10 Nov 2025 116th sean-niemann 🇺🇸 878 76 2,410ms 24 Oct 2024 117th JayXon 🇺🇸 878 93 108ms 14 Oct 2024 118th JayXon 🇺🇸 877 95 374ms 23 Jul 2025 119th JayXon 🇺🇸 876 84 117ms 24 May 2025 120th 5cw 🇺🇸 876 91 16ms 1 Oct 2024 120th stefangimmillaro 876 91 16ms 13 Oct 2024 120th duckyluuk 🇳🇱 876 91 21ms 18 Oct 2024 120th GrayJoKing 🇦🇺 876 91 19ms 2 Jul 2025 124th kg583 🇺🇸 874 111 7ms 29 hours ago 125th AlephSquirrel 873 76 445ms 1 Oct 2024 126th edsrzf 🇳🇿 873 107 421ms 13 hours ago 127th ovs-code 🇩🇪 873 127 127ms 2 Oct 2024 128th JayXon 🇺🇸 872 117 2ms 5 Oct 2024 129th Shanethegamer 🇺🇸 871 91 2ms 4 Oct 2024 130th pardouin 🇫🇷 870 55 37ms 3 Oct 2024 130th ovs-code 🇩🇪 870 55 37ms 5 Oct 2024 130th Steffan153 🇫🇮 870 55 39ms 4 days ago 133rd Natanaelel 🇸🇪 870 74 12ms 1 Oct 2024 133rd helbling 🇨🇭 870 74 12ms 1 Oct 2024 133rd Irratix 🇳🇱 870 74 11ms 14 Oct 2024 133rd emgordon154 870 74 12ms 18 Nov 2024 137th error256 868 109 8ms 24 Jul 2025 137th edsrzf 🇳🇿 868 109 7ms 24 Jul 2025 139th emgordon154 867 77 2,406ms 8 Nov 2024 140th Shanethegamer 🇺🇸 866 92 16ms 3 Oct 2024 140th error256 866 92 21ms 7 Oct 2024 140th thatbirdguythatuknownot 866 92 18ms 14 Oct 2024 143rd UnderKoen 🇳🇱 865 86 7ms 4 Oct 2024 144th JayXon 🇺🇸 865 104 89ms 6 Oct 2024 145th ovs-code 🇩🇪 864 78 111ms 2 Oct 2024 146th GrayJoKing 🇦🇺 864 87 12ms 25 Nov 2025 147th ovs-code 🇩🇪 862 29 40ms 4 Oct 2024 148th pardouin 🇫🇷 861 66 1,435ms 10 Apr 2025 149th xsot 🇸🇬 861 82 2ms 6 May 2025 150th Natanaelel 🇸🇪 860 33 2ms 6 Oct 2024 150th GrayJoKing 🇦🇺 860 33 2ms 6 Jun 2025 150th SirBogman 🇺🇸 860 33 2ms 8 Jul 2025 153rd nwellnhof 🇩🇪 860 68 9ms 5 Oct 2024 154th tomtheisen 🇺🇸 860 83 443ms 10 Feb 2025 155th edsrzf 🇳🇿 860 84 4ms 30 hours ago 156th zacjl 860 110 7ms 10 Oct 2024 157th edsrzf 🇳🇿 859 113 6ms 22 days ago 158th voytxt 🇨🇿 858 75 10ms 1 Oct 2024 158th MeWhenI 🇻🇦 858 75 10ms 2 Oct 2024 158th m-tkach 🇺🇦 858 75 9ms 5 Oct 2024 First Prev 81–160 of 895 Next Last