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 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 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 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 375th zbreit 🇺🇸 745 107 16ms 29 Oct 2024 375th StardustGogeta 745 107 16ms 30 Oct 2024 375th ZakkkkAttackkkk 🇵🇭 745 107 16ms 8 Feb 2025 375th InigoK 🇺🇸 745 107 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 373ms 24 Oct 2024 383rd SirBogman 🇺🇸 741 63 275ms 23 Jul 2025 384th GrayJoKing 🇦🇺 740 79 1,204ms 1 Oct 2024 385th KrausRaus 🇺🇸 740 87 9ms 1 Oct 2024 385th GeorgeStechman 🇬🇧 740 87 9ms 24 Oct 2024 385th coreynash 740 87 9ms 13 Feb 2025 388th DialFrost 🇸🇬 739 76 739ms 9 Oct 2024 389th Shanethegamer 🇺🇸 739 172 39ms 2 Oct 2024 390th Shanethegamer 🇺🇸 738 90 3,004ms 28 Oct 2024 391st neihousaigaai 738 108 16ms 4 Oct 2024 391st StefanHabel 🇨🇦 738 108 16ms 23 Jan 2025 391st CaedenHarper 🇨🇦 738 108 16ms 22 Jul 2025 391st BrunoVisnadi 🇧🇷 738 108 16ms 1 Oct 2025 395th lifthrasiir 🇰🇷 736 90 471ms 2 Dec 2024 396th MeWhenI 🇻🇦 736 111 117ms 2 Oct 2024 397th MeWhenI 🇻🇦 735 34 50ms 2 Oct 2024 397th emgordon154 735 34 61ms 11 Sep 2025 399th stefangimmillaro 735 92 9ms 2 Oct 2024 399th Shanethegamer 🇺🇸 735 92 5ms 3 Oct 2024 401st Shanethegamer 🇺🇸 735 100 116ms 24 May 2025 402nd Shanethegamer 🇺🇸 733 116 18ms 1 Oct 2024 403rd Shanethegamer 🇺🇸 732 156 30ms 2 Oct 2024 404th kirjavascript 731 88 9ms 15 Mar 2025 405th Shanethegamer 🇺🇸 731 101 4ms 2 Oct 2024 406th stefangimmillaro 731 114 326ms 13 Oct 2024 407th MeWhenI 🇻🇦 730 174 41ms 13 Feb 2025 408th anter69 🇭🇺 729 78 1,023ms 1 Oct 2024 409th Shanethegamer 🇺🇸 729 112 103ms 3 Oct 2024 410th MeWhenI 🇻🇦 726 88 128ms 2 Oct 2024 410th Shanethegamer 🇺🇸 726 88 148ms 8 Jan 2025 412th cros107 🇦🇺 724 110 16ms 1 Jan 2025 412th guilhem-roy 🇫🇷 724 110 17ms 29 May 2025 412th Lv0Sys 🇵🇱 724 110 18ms 11 hours ago 415th Shanethegamer 🇺🇸 724 126 1,278ms 2 Oct 2024 416th dtbao20 🇻🇳 723 89 10ms 1 Oct 2024 416th madeforlosers 723 89 8ms 17 Oct 2024 416th junkondo-jp 723 89 9ms 14 Dec 2024 419th annaproxy 723 132 14ms 1 Oct 2024 420th MeWhenI 🇻🇦 721 179 1,697ms 7 Nov 2025 421st weeble 720 74 6ms 1 Jul 2025 422nd MeWhenI 🇻🇦 720 78 287ms 2 Oct 2024 423rd Shanethegamer 🇺🇸 720 96 2ms 3 Oct 2024 424th voytxt 🇨🇿 718 89 129ms 17 Apr 2025 425th mousetail 🇳🇱 718 111 16ms 6 Oct 2024 426th alexsave 715 90 9ms 28 Oct 2024 427th anter69 🇭🇺 713 67 34ms 1 Oct 2024 428th SirBogman 🇺🇸 713 93 384ms 23 Jul 2025 428th snoozingnewt 🇨🇦 713 93 407ms 4 days ago 430th h3ra993huskp 🇯🇵 712 131 497ms 10 days ago 431st rzv-me 711 95 5ms 5 Oct 2024 432nd OllieBoyne 🇬🇧 711 112 16ms 17 Oct 2024 432nd WillConker 711 112 10ms 22 Oct 2024 432nd maxgodfrey2004 🇨🇦 711 112 10ms 4 Jan 2025 432nd Babafaba 711 112 16ms 11 Nov 2025 436th snyderek 🇺🇸 711 121 58ms 1 Oct 2024 437th Natanaelel 🇸🇪 709 55 34ms 1 Mar 2025 438th snoozingnewt 🇨🇦 709 95 79ms 23 Oct 2025 439th DialFrost 🇸🇬 709 106 11ms 13 Dec 2024 440th DialFrost 🇸🇬 707 132 370ms 8 Apr 2025 441st Shanethegamer 🇺🇸 706 118 357ms 2 Oct 2024 442nd SB-945 705 113 16ms 1 Oct 2024 442nd Artemis21 🇬🇧 705 113 16ms 23 Jan 2025 442nd fkantelberg 705 113 10ms 11 Jul 2025 445th MeWhenI 🇻🇦 704 115 435ms 5 Oct 2024 445th emgordon154 704 115 97ms 31 hours ago 447th Alex-x90 🇺🇸 703 100 2ms 1 Oct 2024 448th cbrt-x 703 157 139ms 1 Oct 2024 449th janlelis 702 68 35ms 1 Oct 2024 450th emgordon154 702 76 5ms 7 Jun 2025 First Prev 376–450 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