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 400th StefanHabel 🇨🇦 738 108 16ms 23 Jan 2025 400th CaedenHarper 🇨🇦 738 108 16ms 22 Jul 2025 400th BrunoVisnadi 🇧🇷 738 108 16ms 1 Oct 2025 404th lifthrasiir 🇰🇷 736 90 496ms 2 Dec 2024 405th MeWhenI 🇻🇦 736 111 117ms 2 Oct 2024 406th MeWhenI 🇻🇦 735 34 54ms 2 Oct 2024 406th emgordon154 735 34 64ms 11 Sep 2025 408th stefangimmillaro 735 92 8ms 2 Oct 2024 408th Shanethegamer 🇺🇸 735 92 5ms 3 Oct 2024 410th Shanethegamer 🇺🇸 735 100 122ms 24 May 2025 411th Shanethegamer 🇺🇸 733 116 1,027ms 1 Oct 2024 412th kirjavascript 731 88 10ms 15 Mar 2025 413th Shanethegamer 🇺🇸 731 101 4ms 2 Oct 2024 414th stefangimmillaro 731 114 326ms 13 Oct 2024 415th MeWhenI 🇻🇦 730 174 41ms 13 Feb 2025 416th anter69 🇭🇺 729 78 1,023ms 1 Oct 2024 417th Shanethegamer 🇺🇸 729 112 106ms 3 Oct 2024 418th MeWhenI 🇻🇦 726 88 128ms 2 Oct 2024 418th Shanethegamer 🇺🇸 726 88 148ms 8 Jan 2025 420th cros107 🇦🇺 724 110 16ms 1 Jan 2025 420th guilhem-roy 🇫🇷 724 110 17ms 29 May 2025 420th Lv0Sys 🇵🇱 724 110 17ms 10 Dec 2025 423rd Shanethegamer 🇺🇸 724 126 1,275ms 2 Oct 2024 424th dtbao20 🇻🇳 723 89 10ms 1 Oct 2024 424th madeforlosers 723 89 10ms 17 Oct 2024 424th junkondo-jp 723 89 10ms 14 Dec 2024 427th annaproxy 723 132 14ms 1 Oct 2024 428th MeWhenI 🇻🇦 721 179 1,697ms 7 Nov 2025 429th weeble 720 74 6ms 1 Jul 2025 430th MeWhenI 🇻🇦 720 78 335ms 2 Oct 2024 431st Shanethegamer 🇺🇸 720 96 2ms 3 Oct 2024 432nd voytxt 🇨🇿 718 89 129ms 17 Apr 2025 433rd mousetail 🇳🇱 718 111 16ms 6 Oct 2024 434th alexsave 715 90 11ms 28 Oct 2024 435th snyderek 🇺🇸 714 121 53ms 1 Oct 2024 436th anter69 🇭🇺 713 67 36ms 1 Oct 2024 437th SirBogman 🇺🇸 713 93 405ms 23 Jul 2025 437th snoozingnewt 🇨🇦 713 93 422ms 6 Dec 2025 439th h3ra993huskp 🇯🇵 712 131 497ms 30 Nov 2025 440th rzv-me 711 95 6ms 5 Oct 2024 441st OllieBoyne 🇬🇧 711 112 16ms 17 Oct 2024 441st WillConker 711 112 10ms 22 Oct 2024 441st maxgodfrey2004 🇨🇦 711 112 10ms 4 Jan 2025 441st Babafaba 711 112 16ms 11 Nov 2025 445th Natanaelel 🇸🇪 709 55 34ms 1 Mar 2025 446th snoozingnewt 🇨🇦 709 95 79ms 23 Oct 2025 447th DialFrost 🇸🇬 709 106 11ms 13 Dec 2024 448th DialFrost 🇸🇬 707 132 225ms 8 Apr 2025 449th Shanethegamer 🇺🇸 706 118 357ms 2 Oct 2024 450th cbrt-x 706 157 139ms 1 Oct 2024 451st SB-945 705 113 16ms 1 Oct 2024 451st Artemis21 🇬🇧 705 113 16ms 23 Jan 2025 451st fkantelberg 705 113 10ms 11 Jul 2025 454th Alex-x90 🇺🇸 704 100 2ms 1 Oct 2024 455th MeWhenI 🇻🇦 704 115 435ms 5 Oct 2024 456th janlelis 703 68 43ms 1 Oct 2024 457th emgordon154 702 76 5ms 7 Jun 2025 458th BlankSpruce 702 123 408ms 1 Oct 2024 459th mousetail 🇳🇱 701 133 149ms 3 Oct 2024 460th LukeBridges 🇬🇧 700 92 10ms 3 Oct 2024 461st HumanoidCPU 699 114 62ms 7 Mar 2025 462nd emgordon154 697 101 2ms 25 Nov 2024 463rd tobeannouncd 697 159 146ms 13 Dec 2024 464th Alex-x90 🇺🇸 696 124 407ms 1 Oct 2024 464th Herbert00709 🇵🇱 696 124 56ms 14 Jun 2025 466th emgordon154 696 134 224ms 25 Feb 2025 467th Shanethegamer 🇺🇸 693 41 3ms 4 Oct 2024 468th jipsong 🇩🇪 693 115 17ms 12 May 2025 468th luuumine 🇫🇷 693 115 20ms 2 Dec 2025 468th Bmrl7 693 115 10ms 17 days ago 468th KatieLG 🇬🇧 693 115 16ms 41 hours ago 472nd Salutations45 692 93 11ms 17 Nov 2024 472nd strattonwhisler 692 93 11ms 26 Mar 2025 474th pardouin 🇫🇷 690 57 4ms 3 Oct 2024 475th NickTheEASDude 🇺🇸 688 115 4ms 17 Dec 2024 476th rowechenzhong 687 116 9ms 17 Oct 2024 477th MeWhenI 🇻🇦 686 68 244ms 2 Oct 2024 478th error256 686 104 425ms 14 Oct 2024 479th aDwarfNamedUrist 684 162 138ms 1 Sep 2025 480th CatsAreFluffy 683 53 49ms 27 Dec 2024 First Prev 401–480 of 862 Next Last