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 ><> ALGOL 68 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 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 ><> ALGOL 68 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 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 canissimia 🇦🇶 893 28 41ms 2 Oct 2024 82nd error256 893 60 1,103ms 20 days ago 83rd nwellnhof 🇩🇪 892 80 459ms 2 Oct 2024 83rd Yax42 🇫🇷 892 80 464ms 7 Feb 2025 85th ovs-code 🇩🇪 891 63 524ms 2 Oct 2024 86th rucin93 🇵🇱 890 78 2ms 18 Nov 2025 86th JayXon 🇺🇸 890 78 2ms 19 Nov 2025 86th sean-niemann 🇺🇸 890 78 2ms 19 Nov 2025 86th edsrzf 🇳🇿 890 78 2ms 41 hours ago 86th Steffan153 🇫🇮 890 78 2ms 38 hours ago 91st GrayJoKing 🇦🇺 889 60 4ms 3 Oct 2024 92nd nwellnhof 🇩🇪 889 105 627ms 25 Sep 2025 93rd JayXon 🇺🇸 889 134 289ms 3 Oct 2024 94th MeWhenI 🇻🇦 888 64 1,305ms 3 Oct 2024 95th kgolf 887 32 3ms 15 Apr 2025 96th Steffan153 🇫🇮 887 65 779ms 5 days ago 97th MeWhenI 🇻🇦 886 54 35ms 3 Oct 2024 97th error256 886 54 36ms 7 Oct 2024 97th nwellnhof 🇩🇪 886 54 37ms 13 Oct 2024 100th canissimia 🇦🇶 886 66 8ms 1 Oct 2024 101st nwellnhof 🇩🇪 886 90 20ms 1 Oct 2024 101st ovs-code 🇩🇪 886 90 17ms 3 Oct 2024 101st kg583 🇺🇸 886 90 16ms 9 Oct 2024 101st sean-niemann 🇺🇸 886 90 20ms 23 Dec 2024 101st firegene 🇮🇪 886 90 16ms 2 days ago 106th lyphyser 883 41 51ms 1 Oct 2024 107th nwellnhof 🇩🇪 883 135 290ms 16 Oct 2024 107th edsrzf 🇳🇿 883 135 272ms 27 hours ago 109th dmrichwa 🇺🇸 882 73 12ms 5 Oct 2024 109th DialFrost 🇸🇬 882 73 10ms 12 Oct 2024 111th GrayJoKing 🇦🇺 881 90 2ms 3 Oct 2024 111th FlyingPenguin223 881 90 2ms 16 Oct 2024 113th acotis 880 106 144ms 29 May 2025 114th JayXon 🇺🇸 879 79 129ms 17 Oct 2024 115th ovs-code 🇩🇪 878 69 4ms 4 Oct 2024 115th edsrzf 🇳🇿 878 69 4ms 10 Nov 2025 117th sean-niemann 🇺🇸 878 76 2,410ms 24 Oct 2024 118th JayXon 🇺🇸 878 93 108ms 14 Oct 2024 119th JayXon 🇺🇸 877 95 374ms 23 Jul 2025 120th JayXon 🇺🇸 876 84 117ms 24 May 2025 121st 5cw 🇺🇸 876 91 16ms 1 Oct 2024 121st stefangimmillaro 876 91 16ms 13 Oct 2024 121st duckyluuk 🇳🇱 876 91 21ms 18 Oct 2024 121st GrayJoKing 🇦🇺 876 91 19ms 2 Jul 2025 125th xsot 🇸🇬 874 66 782ms 6 hours ago 126th kg583 🇺🇸 874 111 7ms 2 days ago 127th AlephSquirrel 873 76 445ms 1 Oct 2024 128th edsrzf 🇳🇿 873 107 421ms 39 hours ago 129th ovs-code 🇩🇪 873 127 127ms 2 Oct 2024 130th JayXon 🇺🇸 872 117 2ms 5 Oct 2024 131st Shanethegamer 🇺🇸 871 91 2ms 4 Oct 2024 132nd pardouin 🇫🇷 870 55 37ms 3 Oct 2024 132nd ovs-code 🇩🇪 870 55 37ms 5 Oct 2024 132nd Steffan153 🇫🇮 870 55 39ms 5 days ago 135th Natanaelel 🇸🇪 870 74 12ms 1 Oct 2024 135th helbling 🇨🇭 870 74 12ms 1 Oct 2024 135th Irratix 🇳🇱 870 74 11ms 14 Oct 2024 135th emgordon154 870 74 12ms 18 Nov 2024 139th error256 868 109 8ms 24 Jul 2025 139th edsrzf 🇳🇿 868 109 7ms 24 Jul 2025 141st emgordon154 867 77 2,406ms 8 Nov 2024 142nd Shanethegamer 🇺🇸 867 92 16ms 3 Oct 2024 142nd error256 867 92 21ms 7 Oct 2024 142nd thatbirdguythatuknownot 867 92 18ms 14 Oct 2024 145th UnderKoen 🇳🇱 865 86 7ms 4 Oct 2024 146th JayXon 🇺🇸 865 104 89ms 6 Oct 2024 147th ovs-code 🇩🇪 864 78 111ms 2 Oct 2024 148th GrayJoKing 🇦🇺 864 87 12ms 25 Nov 2025 149th ovs-code 🇩🇪 862 29 40ms 4 Oct 2024 150th pardouin 🇫🇷 861 66 1,435ms 10 Apr 2025 151st xsot 🇸🇬 861 82 2ms 6 May 2025 152nd Natanaelel 🇸🇪 860 33 2ms 6 Oct 2024 152nd GrayJoKing 🇦🇺 860 33 2ms 6 Jun 2025 152nd SirBogman 🇺🇸 860 33 2ms 8 Jul 2025 155th nwellnhof 🇩🇪 860 68 9ms 5 Oct 2024 156th tomtheisen 🇺🇸 860 83 443ms 10 Feb 2025 157th edsrzf 🇳🇿 860 84 4ms 2 days ago 158th zacjl 860 110 7ms 10 Oct 2024 159th voytxt 🇨🇿 859 75 10ms 1 Oct 2024 159th MeWhenI 🇻🇦 859 75 10ms 2 Oct 2024 First Prev 81–160 of 900 Next Last