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 401st sean-niemann 🇺🇸 747 93 113ms 24 Oct 2024 402nd commandz0 🇺🇸 745 107 17ms 7 Oct 2024 402nd zbreit 🇺🇸 745 107 16ms 29 Oct 2024 402nd StardustGogeta 745 107 17ms 30 Oct 2024 402nd ZakkkkAttackkkk 🇵🇭 745 107 16ms 8 Feb 2025 402nd InigoK 🇺🇸 745 107 17ms 22 Sep 2025 402nd Lv0Sys 🇵🇱 745 107 17ms 25 days ago 408th Shanethegamer 🇺🇸 744 121 89ms 3 Oct 2024 409th Natanaelel 🇸🇪 743 53 3ms 10 Jan 2026 410th SirBogman 🇺🇸 741 63 317ms 23 Jul 2025 411th KrausRaus 🇺🇸 741 87 10ms 1 Oct 2024 411th GeorgeStechman 🇬🇧 741 87 11ms 24 Oct 2024 411th coreynash 741 87 10ms 13 Feb 2025 414th Shanethegamer 🇺🇸 741 90 2,577ms 28 Oct 2024 414th ScottHamper 741 90 2,783ms 11 Dec 2025 416th DialFrost 🇸🇬 741 131 7ms 11 Dec 2024 417th DialFrost 🇸🇬 740 76 813ms 9 Oct 2024 418th neihousaigaai 738 108 17ms 4 Oct 2024 418th StefanHabel 🇨🇦 738 108 15ms 23 Jan 2025 418th CaedenHarper 🇨🇦 738 108 17ms 22 Jul 2025 418th BrunoVisnadi 🇧🇷 738 108 16ms 1 Oct 2025 422nd lifthrasiir 🇰🇷 737 90 459ms 2 Dec 2024 423rd anter69 🇭🇺 736 65 38ms 22 days ago 424th stefangimmillaro 736 92 8ms 2 Oct 2024 424th Shanethegamer 🇺🇸 736 92 5ms 3 Oct 2024 426th MeWhenI 🇻🇦 736 111 128ms 2 Oct 2024 427th MeWhenI 🇻🇦 735 34 54ms 2 Oct 2024 427th emgordon154 735 34 62ms 11 Sep 2025 427th plcc0 735 34 69ms 31 Jan 2026 430th Shanethegamer 🇺🇸 735 100 161ms 24 May 2025 431st Shanethegamer 🇺🇸 735 132 7ms 2 Oct 2024 432nd Kacarott 🇦🇺 734 73 1,111ms 1 Oct 2024 432nd chunes3 🇺🇸 734 73 1,046ms 2 Oct 2024 434th Shanethegamer 🇺🇸 733 116 1,027ms 1 Oct 2024 435th kirjavascript 732 88 10ms 15 Mar 2025 436th stefangimmillaro 731 114 376ms 13 Oct 2024 437th edsrzf 🇳🇿 730 52 118ms 16 Jan 2026 438th Shanethegamer 🇺🇸 729 112 106ms 3 Oct 2024 439th error256 728 98 436ms 17 Jan 2026 440th MeWhenI 🇻🇦 726 88 136ms 2 Oct 2024 440th Shanethegamer 🇺🇸 726 88 146ms 8 Jan 2025 442nd cros107 🇦🇺 725 110 17ms 1 Jan 2025 442nd guilhem-roy 🇫🇷 725 110 17ms 29 May 2025 444th dtbao20 🇻🇳 724 89 11ms 1 Oct 2024 444th madeforlosers 724 89 9ms 17 Oct 2024 444th junkondo-jp 724 89 12ms 14 Dec 2024 444th alexsave 724 89 12ms 20 Jan 2026 448th Shanethegamer 🇺🇸 724 126 1,342ms 2 Oct 2024 449th Shanethegamer 🇺🇸 723 96 2ms 3 Oct 2024 450th annaproxy 723 132 15ms 1 Oct 2024 451st MeWhenI 🇻🇦 721 78 316ms 2 Oct 2024 452nd dokutan 721 92 392ms 7 days ago 453rd MeWhenI 🇻🇦 721 179 1,697ms 7 Nov 2025 454th weeble 720 74 6ms 1 Jul 2025 455th voytxt 🇨🇿 718 89 153ms 17 Apr 2025 456th mousetail 🇳🇱 718 111 17ms 6 Oct 2024 457th snyderek 🇺🇸 718 121 61ms 1 Oct 2024 458th Shanethegamer 🇺🇸 715 101 5ms 2 Oct 2024 459th ovs-code 🇩🇪 714 75 1,104ms 1 Oct 2024 460th SirBogman 🇺🇸 713 93 503ms 23 Jul 2025 460th snoozingnewt 🇨🇦 713 93 469ms 6 Dec 2025 462nd rzv-me 713 95 6ms 5 Oct 2024 463rd DialFrost 🇸🇬 713 106 12ms 13 Dec 2024 464th h3ra993huskp 🇯🇵 713 131 422ms 30 Nov 2025 465th OllieBoyne 🇬🇧 712 112 17ms 17 Oct 2024 465th WillConker 712 112 12ms 22 Oct 2024 465th maxgodfrey2004 🇨🇦 712 112 10ms 4 Jan 2025 465th Babafaba 712 112 16ms 11 Nov 2025 469th Natanaelel 🇸🇪 709 55 34ms 1 Mar 2025 470th snoozingnewt 🇨🇦 709 95 78ms 23 Oct 2025 471st DialFrost 🇸🇬 708 132 238ms 8 Apr 2025 472nd Alex-x90 🇺🇸 706 100 2ms 1 Oct 2024 473rd SB-945 706 113 17ms 1 Oct 2024 473rd Artemis21 🇬🇧 706 113 17ms 23 Jan 2025 473rd fkantelberg 706 113 10ms 11 Jul 2025 476th Shanethegamer 🇺🇸 706 118 376ms 2 Oct 2024 477th BlankSpruce 706 123 427ms 1 Oct 2024 478th cbrt-x 706 157 139ms 1 Oct 2024 479th Shanethegamer 🇺🇸 706 172 39ms 2 Oct 2024 480th edsrzf 🇳🇿 705 76 1,005ms 1 Oct 2024 First Prev 401–480 of 911 Next Last