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 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 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 ArkScript 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 ArkScript 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 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 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 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 399th CaedenHarper 🇨🇦 738 108 16ms 22 Jul 2025 399th BrunoVisnadi 🇧🇷 738 108 16ms 1 Oct 2025 403rd lifthrasiir 🇰🇷 736 90 496ms 2 Dec 2024 404th MeWhenI 🇻🇦 736 111 117ms 2 Oct 2024 405th MeWhenI 🇻🇦 735 34 54ms 2 Oct 2024 405th emgordon154 735 34 64ms 11 Sep 2025 407th stefangimmillaro 735 92 8ms 2 Oct 2024 407th Shanethegamer 🇺🇸 735 92 5ms 3 Oct 2024 409th Shanethegamer 🇺🇸 735 100 122ms 24 May 2025 410th Shanethegamer 🇺🇸 733 116 1,027ms 1 Oct 2024 411th kirjavascript 731 88 10ms 15 Mar 2025 412th Shanethegamer 🇺🇸 731 101 4ms 2 Oct 2024 413th stefangimmillaro 731 114 326ms 13 Oct 2024 414th MeWhenI 🇻🇦 730 174 41ms 13 Feb 2025 415th anter69 🇭🇺 729 78 1,023ms 1 Oct 2024 416th Shanethegamer 🇺🇸 729 112 106ms 3 Oct 2024 417th MeWhenI 🇻🇦 726 88 128ms 2 Oct 2024 417th Shanethegamer 🇺🇸 726 88 148ms 8 Jan 2025 419th cros107 🇦🇺 724 110 16ms 1 Jan 2025 419th guilhem-roy 🇫🇷 724 110 17ms 29 May 2025 419th Lv0Sys 🇵🇱 724 110 17ms 10 Dec 2025 422nd Shanethegamer 🇺🇸 724 126 1,275ms 2 Oct 2024 423rd dtbao20 🇻🇳 723 89 10ms 1 Oct 2024 423rd madeforlosers 723 89 10ms 17 Oct 2024 423rd junkondo-jp 723 89 10ms 14 Dec 2024 426th annaproxy 723 132 14ms 1 Oct 2024 427th MeWhenI 🇻🇦 721 179 1,697ms 7 Nov 2025 428th weeble 720 74 6ms 1 Jul 2025 429th MeWhenI 🇻🇦 720 78 335ms 2 Oct 2024 430th Shanethegamer 🇺🇸 720 96 2ms 3 Oct 2024 431st voytxt 🇨🇿 718 89 129ms 17 Apr 2025 432nd mousetail 🇳🇱 718 111 16ms 6 Oct 2024 433rd alexsave 715 90 11ms 28 Oct 2024 434th snyderek 🇺🇸 714 121 53ms 1 Oct 2024 435th anter69 🇭🇺 713 67 36ms 1 Oct 2024 436th SirBogman 🇺🇸 713 93 405ms 23 Jul 2025 436th snoozingnewt 🇨🇦 713 93 422ms 6 Dec 2025 438th h3ra993huskp 🇯🇵 712 131 497ms 30 Nov 2025 439th rzv-me 711 95 6ms 5 Oct 2024 440th OllieBoyne 🇬🇧 711 112 16ms 17 Oct 2024 440th WillConker 711 112 10ms 22 Oct 2024 440th maxgodfrey2004 🇨🇦 711 112 10ms 4 Jan 2025 440th Babafaba 711 112 16ms 11 Nov 2025 444th Natanaelel 🇸🇪 709 55 34ms 1 Mar 2025 445th snoozingnewt 🇨🇦 709 95 79ms 23 Oct 2025 446th DialFrost 🇸🇬 709 106 11ms 13 Dec 2024 447th DialFrost 🇸🇬 707 132 225ms 8 Apr 2025 448th Shanethegamer 🇺🇸 706 118 357ms 2 Oct 2024 449th cbrt-x 706 157 139ms 1 Oct 2024 450th SB-945 705 113 16ms 1 Oct 2024 450th Artemis21 🇬🇧 705 113 16ms 23 Jan 2025 450th fkantelberg 705 113 10ms 11 Jul 2025 453rd Alex-x90 🇺🇸 704 100 2ms 1 Oct 2024 454th MeWhenI 🇻🇦 704 115 435ms 5 Oct 2024 455th janlelis 703 68 43ms 1 Oct 2024 456th emgordon154 702 76 5ms 7 Jun 2025 457th BlankSpruce 702 123 408ms 1 Oct 2024 458th mousetail 🇳🇱 701 133 149ms 3 Oct 2024 459th LukeBridges 🇬🇧 700 92 10ms 3 Oct 2024 460th HumanoidCPU 699 114 62ms 7 Mar 2025 461st emgordon154 697 101 2ms 25 Nov 2024 462nd tobeannouncd 697 159 146ms 13 Dec 2024 463rd Alex-x90 🇺🇸 696 124 407ms 1 Oct 2024 463rd Herbert00709 🇵🇱 696 124 56ms 14 Jun 2025 465th emgordon154 696 134 224ms 25 Feb 2025 466th Shanethegamer 🇺🇸 693 41 3ms 4 Oct 2024 467th jipsong 🇩🇪 693 115 17ms 12 May 2025 467th luuumine 🇫🇷 693 115 20ms 2 Dec 2025 467th Bmrl7 693 115 10ms 16 days ago 470th Salutations45 692 93 11ms 17 Nov 2024 470th strattonwhisler 692 93 11ms 26 Mar 2025 472nd pardouin 🇫🇷 690 57 4ms 3 Oct 2024 473rd NickTheEASDude 🇺🇸 688 115 4ms 17 Dec 2024 474th rowechenzhong 687 116 9ms 17 Oct 2024 475th MeWhenI 🇻🇦 686 68 244ms 2 Oct 2024 476th error256 686 104 425ms 14 Oct 2024 477th aDwarfNamedUrist 684 162 138ms 1 Sep 2025 478th CatsAreFluffy 683 53 49ms 27 Dec 2024 479th madex 🇩🇪 683 103 1ms 2 Oct 2024 480th MeWhenI 🇻🇦 681 108 154ms 2 Oct 2024 First Prev 401–480 of 859 Next Last