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 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 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 Calendar 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 Multitap Input NFA Simulator 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 Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight 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 Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight 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 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 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 Calendar 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 Multitap Input NFA Simulator 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 375th zbreit 🇺🇸 744 107 18ms 29 Oct 2024 375th StardustGogeta 744 107 16ms 30 Oct 2024 375th ZakkkkAttackkkk 🇵🇭 744 107 15ms 8 Feb 2025 375th InigoK 🇺🇸 744 107 16ms 22 Sep 2025 380th Shanethegamer 🇺🇸 744 121 83ms 3 Oct 2024 381st sean-niemann 🇺🇸 743 93 100ms 24 Oct 2024 382nd sean-niemann 🇺🇸 742 116 374ms 24 Oct 2024 383rd SirBogman 🇺🇸 741 63 275ms 23 Jul 2025 384th KrausRaus 🇺🇸 740 87 9ms 1 Oct 2024 384th GeorgeStechman 🇬🇧 740 87 9ms 24 Oct 2024 384th coreynash 740 87 9ms 13 Feb 2025 387th DialFrost 🇸🇬 739 76 765ms 9 Oct 2024 388th Shanethegamer 🇺🇸 739 172 42ms 2 Oct 2024 389th Shanethegamer 🇺🇸 738 90 2,988ms 28 Oct 2024 390th neihousaigaai 738 108 16ms 4 Oct 2024 390th StefanHabel 🇨🇦 738 108 16ms 23 Jan 2025 390th CaedenHarper 🇨🇦 738 108 16ms 22 Jul 2025 390th BrunoVisnadi 🇧🇷 738 108 23ms 1 Oct 2025 394th lifthrasiir 🇰🇷 736 90 485ms 2 Dec 2024 395th MeWhenI 🇻🇦 736 111 122ms 2 Oct 2024 396th MeWhenI 🇻🇦 735 34 61ms 2 Oct 2024 396th emgordon154 735 34 60ms 11 Sep 2025 398th stefangimmillaro 735 92 7ms 2 Oct 2024 398th Shanethegamer 🇺🇸 735 92 5ms 3 Oct 2024 400th Shanethegamer 🇺🇸 735 100 116ms 24 May 2025 401st Shanethegamer 🇺🇸 733 116 21ms 1 Oct 2024 402nd Shanethegamer 🇺🇸 732 156 30ms 2 Oct 2024 403rd kirjavascript 731 88 9ms 15 Mar 2025 404th Shanethegamer 🇺🇸 731 101 4ms 2 Oct 2024 405th stefangimmillaro 731 114 333ms 13 Oct 2024 406th MeWhenI 🇻🇦 730 174 39ms 13 Feb 2025 407th anter69 🇭🇺 729 78 1,023ms 1 Oct 2024 408th Shanethegamer 🇺🇸 729 112 102ms 3 Oct 2024 409th MeWhenI 🇻🇦 726 88 128ms 2 Oct 2024 409th Shanethegamer 🇺🇸 726 88 151ms 8 Jan 2025 411th cros107 🇦🇺 724 110 17ms 1 Jan 2025 411th guilhem-roy 🇫🇷 724 110 16ms 29 May 2025 413th Shanethegamer 🇺🇸 724 126 1,278ms 2 Oct 2024 414th dtbao20 🇻🇳 723 89 10ms 1 Oct 2024 414th madeforlosers 723 89 8ms 17 Oct 2024 414th junkondo-jp 723 89 9ms 14 Dec 2024 417th annaproxy 723 132 14ms 1 Oct 2024 418th MeWhenI 🇻🇦 721 179 1,554ms 7 Nov 2025 419th weeble 720 74 8ms 1 Jul 2025 420th MeWhenI 🇻🇦 720 78 287ms 2 Oct 2024 421st Shanethegamer 🇺🇸 720 96 2ms 3 Oct 2024 422nd voytxt 🇨🇿 718 89 132ms 17 Apr 2025 423rd mousetail 🇳🇱 718 111 16ms 6 Oct 2024 424th alexsave 715 90 9ms 28 Oct 2024 425th anter69 🇭🇺 713 67 46ms 1 Oct 2024 426th SirBogman 🇺🇸 713 93 408ms 23 Jul 2025 426th snoozingnewt 🇨🇦 713 93 390ms 33 hours ago 428th h3ra993huskp 🇯🇵 712 131 337ms 8 days ago 429th rzv-me 711 95 5ms 5 Oct 2024 430th OllieBoyne 🇬🇧 711 112 25ms 17 Oct 2024 430th WillConker 711 112 10ms 22 Oct 2024 430th maxgodfrey2004 🇨🇦 711 112 9ms 4 Jan 2025 430th Babafaba 711 112 18ms 26 days ago 434th snyderek 🇺🇸 711 121 57ms 1 Oct 2024 435th Natanaelel 🇸🇪 709 55 42ms 1 Mar 2025 436th snoozingnewt 🇨🇦 709 95 75ms 23 Oct 2025 437th DialFrost 🇸🇬 709 106 11ms 13 Dec 2024 438th DialFrost 🇸🇬 707 132 213ms 8 Apr 2025 439th Shanethegamer 🇺🇸 706 118 332ms 2 Oct 2024 440th SB-945 705 113 15ms 1 Oct 2024 440th Artemis21 🇬🇧 705 113 16ms 23 Jan 2025 440th fkantelberg 705 113 9ms 11 Jul 2025 443rd Alex-x90 🇺🇸 704 100 2ms 1 Oct 2024 444th MeWhenI 🇻🇦 704 115 435ms 5 Oct 2024 445th cbrt-x 703 157 197ms 1 Oct 2024 446th janlelis 702 68 37ms 1 Oct 2024 447th emgordon154 702 76 6ms 7 Jun 2025 448th mousetail 🇳🇱 701 133 152ms 3 Oct 2024 449th LukeBridges 🇬🇧 700 92 9ms 3 Oct 2024 450th HumanoidCPU 699 114 62ms 7 Mar 2025 First Prev 376–450 of 842 Next 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