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 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 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 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 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 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 Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 81st canissimia 🇦🇶 893 28 43ms 2 Oct 2024 82nd error256 893 60 1,103ms 1 Feb 2026 83rd ovs-code 🇩🇪 893 63 524ms 2 Oct 2024 84th nwellnhof 🇩🇪 892 80 422ms 2 Oct 2024 84th Yax42 🇫🇷 892 80 427ms 7 Feb 2025 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 20 Feb 2026 86th Steffan153 🇫🇮 890 78 2ms 20 Feb 2026 91st GrayJoKing 🇦🇺 889 60 4ms 3 Oct 2024 92nd nwellnhof 🇩🇪 889 105 627ms 25 Sep 2025 93rd JayXon 🇺🇸 889 134 292ms 3 Oct 2024 94th MeWhenI 🇻🇦 888 64 1,305ms 3 Oct 2024 95th kgolf 887 32 3ms 15 Apr 2025 96th rucin93 🇵🇱 887 72 153ms 20 days ago 96th Steffan153 🇫🇮 887 72 167ms 20 days ago 98th MeWhenI 🇻🇦 886 54 36ms 3 Oct 2024 98th error256 886 54 37ms 7 Oct 2024 98th nwellnhof 🇩🇪 886 54 34ms 13 Oct 2024 101st canissimia 🇦🇶 886 66 8ms 1 Oct 2024 102nd nwellnhof 🇩🇪 886 90 20ms 1 Oct 2024 102nd ovs-code 🇩🇪 886 90 17ms 3 Oct 2024 102nd kg583 🇺🇸 886 90 16ms 9 Oct 2024 102nd sean-niemann 🇺🇸 886 90 20ms 23 Dec 2024 102nd firegene 🇮🇪 886 90 16ms 19 Feb 2026 102nd lukegustafson 🇺🇸 886 90 17ms 24 days ago 108th lyphyser 883 41 51ms 1 Oct 2024 109th dmrichwa 🇺🇸 883 73 10ms 5 Oct 2024 109th DialFrost 🇸🇬 883 73 9ms 12 Oct 2024 111th nwellnhof 🇩🇪 883 135 289ms 16 Oct 2024 111th edsrzf 🇳🇿 883 135 272ms 21 Feb 2026 113th GrayJoKing 🇦🇺 881 90 2ms 3 Oct 2024 113th FlyingPenguin223 881 90 2ms 16 Oct 2024 115th acotis 881 106 147ms 29 May 2025 116th JayXon 🇺🇸 879 79 114ms 17 Oct 2024 117th ovs-code 🇩🇪 878 69 4ms 4 Oct 2024 117th edsrzf 🇳🇿 878 69 4ms 10 Nov 2025 119th sean-niemann 🇺🇸 878 76 2,802ms 24 Oct 2024 120th JayXon 🇺🇸 878 93 106ms 14 Oct 2024 121st JayXon 🇺🇸 877 95 384ms 23 Jul 2025 122nd JayXon 🇺🇸 876 84 175ms 24 May 2025 123rd 5cw 🇺🇸 876 91 16ms 1 Oct 2024 123rd stefangimmillaro 876 91 16ms 13 Oct 2024 123rd duckyluuk 🇳🇱 876 91 21ms 18 Oct 2024 123rd GrayJoKing 🇦🇺 876 91 19ms 2 Jul 2025 127th edsrzf 🇳🇿 875 110 7ms 5 hours ago 128th xsot 🇸🇬 874 66 782ms 27 days ago 129th AlephSquirrel 873 76 445ms 1 Oct 2024 130th edsrzf 🇳🇿 873 107 411ms 20 Feb 2026 131st ovs-code 🇩🇪 873 127 127ms 2 Oct 2024 132nd JayXon 🇺🇸 872 117 2ms 5 Oct 2024 133rd Natanaelel 🇸🇪 871 74 13ms 1 Oct 2024 133rd helbling 🇨🇭 871 74 14ms 1 Oct 2024 133rd Irratix 🇳🇱 871 74 10ms 14 Oct 2024 133rd emgordon154 871 74 9ms 18 Nov 2024 137th Shanethegamer 🇺🇸 871 91 2ms 4 Oct 2024 138th pardouin 🇫🇷 870 55 37ms 3 Oct 2024 138th ovs-code 🇩🇪 870 55 36ms 5 Oct 2024 138th Steffan153 🇫🇮 870 55 43ms 16 Feb 2026 141st GrayJoKing 🇦🇺 869 87 12ms 25 Nov 2025 142nd error256 868 109 11ms 24 Jul 2025 142nd edsrzf 🇳🇿 868 109 7ms 24 Jul 2025 144th emgordon154 867 77 2,868ms 8 Nov 2024 145th Shanethegamer 🇺🇸 867 92 16ms 3 Oct 2024 145th error256 867 92 21ms 7 Oct 2024 145th thatbirdguythatuknownot 867 92 18ms 14 Oct 2024 148th kg583 🇺🇸 867 111 7ms 20 Feb 2026 149th UnderKoen 🇳🇱 865 86 7ms 4 Oct 2024 150th JayXon 🇺🇸 865 104 84ms 6 Oct 2024 151st ovs-code 🇩🇪 864 78 112ms 2 Oct 2024 152nd ovs-code 🇩🇪 862 29 43ms 4 Oct 2024 153rd pardouin 🇫🇷 861 66 1,435ms 10 Apr 2025 154th xsot 🇸🇬 861 82 2ms 6 May 2025 155th Natanaelel 🇸🇪 860 33 2ms 6 Oct 2024 155th GrayJoKing 🇦🇺 860 33 2ms 6 Jun 2025 155th SirBogman 🇺🇸 860 33 2ms 8 Jul 2025 158th nwellnhof 🇩🇪 860 68 9ms 5 Oct 2024 159th tomtheisen 🇺🇸 860 83 440ms 10 Feb 2025 160th edsrzf 🇳🇿 860 84 4ms 20 Feb 2026 First Prev 81–160 of 912 Next Last