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 401st KrausRaus 🇺🇸 740 87 10ms 1 Oct 2024 401st GeorgeStechman 🇬🇧 740 87 10ms 24 Oct 2024 401st coreynash 740 87 9ms 13 Feb 2025 404th DialFrost 🇸🇬 739 76 813ms 9 Oct 2024 405th Shanethegamer 🇺🇸 739 172 39ms 2 Oct 2024 406th neihousaigaai 738 108 17ms 4 Oct 2024 406th StefanHabel 🇨🇦 738 108 15ms 23 Jan 2025 406th CaedenHarper 🇨🇦 738 108 17ms 22 Jul 2025 406th BrunoVisnadi 🇧🇷 738 108 16ms 1 Oct 2025 410th lifthrasiir 🇰🇷 736 90 478ms 2 Dec 2024 411th stefangimmillaro 736 92 8ms 2 Oct 2024 411th Shanethegamer 🇺🇸 736 92 5ms 3 Oct 2024 413th MeWhenI 🇻🇦 736 111 116ms 2 Oct 2024 414th MeWhenI 🇻🇦 735 34 58ms 2 Oct 2024 414th emgordon154 735 34 69ms 11 Sep 2025 414th plcc0 735 34 68ms 16 days ago 417th Shanethegamer 🇺🇸 735 100 122ms 24 May 2025 418th Kacarott 🇦🇺 734 73 1,111ms 1 Oct 2024 418th chunes3 🇺🇸 734 73 1,046ms 2 Oct 2024 420th Shanethegamer 🇺🇸 733 116 1,027ms 1 Oct 2024 421st kirjavascript 732 88 10ms 15 Mar 2025 422nd Shanethegamer 🇺🇸 731 101 5ms 2 Oct 2024 423rd stefangimmillaro 731 114 326ms 13 Oct 2024 424th edsrzf 🇳🇿 730 52 113ms 16 Jan 2026 425th MeWhenI 🇻🇦 730 174 41ms 13 Feb 2025 426th anter69 🇭🇺 729 78 1,271ms 1 Oct 2024 427th Shanethegamer 🇺🇸 729 112 99ms 3 Oct 2024 428th error256 728 98 416ms 17 Jan 2026 429th MeWhenI 🇻🇦 726 88 131ms 2 Oct 2024 429th Shanethegamer 🇺🇸 726 88 140ms 8 Jan 2025 431st cros107 🇦🇺 725 110 18ms 1 Jan 2025 431st guilhem-roy 🇫🇷 725 110 17ms 29 May 2025 431st Lv0Sys 🇵🇱 725 110 17ms 10 Dec 2025 434th Shanethegamer 🇺🇸 724 126 1,391ms 2 Oct 2024 435th dtbao20 🇻🇳 723 89 10ms 1 Oct 2024 435th madeforlosers 723 89 10ms 17 Oct 2024 435th junkondo-jp 723 89 9ms 14 Dec 2024 435th alexsave 723 89 10ms 20 Jan 2026 439th annaproxy 723 132 14ms 1 Oct 2024 440th MeWhenI 🇻🇦 721 179 1,697ms 7 Nov 2025 441st weeble 720 74 6ms 1 Jul 2025 442nd MeWhenI 🇻🇦 720 78 322ms 2 Oct 2024 443rd Shanethegamer 🇺🇸 720 96 2ms 3 Oct 2024 444th voytxt 🇨🇿 718 89 136ms 17 Apr 2025 445th mousetail 🇳🇱 718 111 17ms 6 Oct 2024 446th snyderek 🇺🇸 718 121 53ms 1 Oct 2024 447th anter69 🇭🇺 714 67 38ms 1 Oct 2024 448th ovs-code 🇩🇪 714 75 1,104ms 1 Oct 2024 449th SirBogman 🇺🇸 713 93 510ms 23 Jul 2025 449th snoozingnewt 🇨🇦 713 93 469ms 6 Dec 2025 451st rzv-me 713 95 5ms 5 Oct 2024 452nd h3ra993huskp 🇯🇵 713 131 422ms 30 Nov 2025 453rd OllieBoyne 🇬🇧 712 112 17ms 17 Oct 2024 453rd WillConker 712 112 12ms 22 Oct 2024 453rd maxgodfrey2004 🇨🇦 712 112 10ms 4 Jan 2025 453rd Babafaba 712 112 17ms 11 Nov 2025 457th Natanaelel 🇸🇪 709 55 34ms 1 Mar 2025 458th snoozingnewt 🇨🇦 709 95 79ms 23 Oct 2025 459th DialFrost 🇸🇬 709 106 12ms 13 Dec 2024 460th DialFrost 🇸🇬 707 132 224ms 8 Apr 2025 461st Alex-x90 🇺🇸 706 100 2ms 1 Oct 2024 462nd Shanethegamer 🇺🇸 706 118 357ms 2 Oct 2024 463rd BlankSpruce 706 123 408ms 1 Oct 2024 464th cbrt-x 706 157 139ms 1 Oct 2024 465th edsrzf 🇳🇿 705 76 1,005ms 1 Oct 2024 466th SB-945 705 113 18ms 1 Oct 2024 466th Artemis21 🇬🇧 705 113 17ms 23 Jan 2025 466th fkantelberg 705 113 10ms 11 Jul 2025 469th MeWhenI 🇻🇦 704 115 453ms 5 Oct 2024 470th Shanethegamer 🇺🇸 704 156 30ms 2 Oct 2024 471st janlelis 703 68 41ms 1 Oct 2024 472nd emgordon154 702 76 5ms 7 Jun 2025 473rd Alex-x90 🇺🇸 701 124 406ms 1 Oct 2024 473rd Herbert00709 🇵🇱 701 124 56ms 14 Jun 2025 475th mousetail 🇳🇱 701 133 149ms 3 Oct 2024 476th LukeBridges 🇬🇧 700 92 10ms 3 Oct 2024 477th HumanoidCPU 699 114 65ms 7 Mar 2025 478th tobeannouncd 697 159 146ms 13 Dec 2024 479th emgordon154 696 134 216ms 25 Feb 2025 480th Shanethegamer 🇺🇸 693 41 3ms 4 Oct 2024 First Prev 401–480 of 890 Next Last