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 400th GeorgeStechman 🇬🇧 740 87 10ms 24 Oct 2024 400th coreynash 740 87 10ms 13 Feb 2025 403rd DialFrost 🇸🇬 739 76 813ms 9 Oct 2024 404th neihousaigaai 738 108 17ms 4 Oct 2024 404th StefanHabel 🇨🇦 738 108 15ms 23 Jan 2025 404th CaedenHarper 🇨🇦 738 108 17ms 22 Jul 2025 404th BrunoVisnadi 🇧🇷 738 108 16ms 1 Oct 2025 408th lifthrasiir 🇰🇷 736 90 459ms 2 Dec 2024 409th stefangimmillaro 736 92 8ms 2 Oct 2024 409th Shanethegamer 🇺🇸 736 92 5ms 3 Oct 2024 411th MeWhenI 🇻🇦 736 111 116ms 2 Oct 2024 412th MeWhenI 🇻🇦 735 34 55ms 2 Oct 2024 412th emgordon154 735 34 63ms 11 Sep 2025 412th plcc0 735 34 68ms 19 days ago 415th Shanethegamer 🇺🇸 735 100 117ms 24 May 2025 416th Shanethegamer 🇺🇸 735 132 7ms 2 Oct 2024 417th Kacarott 🇦🇺 734 73 1,111ms 1 Oct 2024 417th chunes3 🇺🇸 734 73 1,046ms 2 Oct 2024 419th Shanethegamer 🇺🇸 733 116 1,027ms 1 Oct 2024 420th kirjavascript 732 88 10ms 15 Mar 2025 421st stefangimmillaro 731 114 326ms 13 Oct 2024 422nd edsrzf 🇳🇿 730 52 113ms 16 Jan 2026 423rd anter69 🇭🇺 729 78 1,271ms 1 Oct 2024 424th Shanethegamer 🇺🇸 729 112 99ms 3 Oct 2024 425th error256 728 98 416ms 17 Jan 2026 426th MeWhenI 🇻🇦 726 88 131ms 2 Oct 2024 426th Shanethegamer 🇺🇸 726 88 140ms 8 Jan 2025 428th cros107 🇦🇺 725 110 17ms 1 Jan 2025 428th guilhem-roy 🇫🇷 725 110 17ms 29 May 2025 428th Lv0Sys 🇵🇱 725 110 16ms 10 Dec 2025 431st Shanethegamer 🇺🇸 724 126 1,391ms 2 Oct 2024 432nd dtbao20 🇻🇳 723 89 12ms 1 Oct 2024 432nd madeforlosers 723 89 12ms 17 Oct 2024 432nd junkondo-jp 723 89 14ms 14 Dec 2024 432nd alexsave 723 89 9ms 20 Jan 2026 436th annaproxy 723 132 15ms 1 Oct 2024 437th MeWhenI 🇻🇦 721 179 1,697ms 7 Nov 2025 438th weeble 720 74 6ms 1 Jul 2025 439th MeWhenI 🇻🇦 720 78 316ms 2 Oct 2024 440th Shanethegamer 🇺🇸 720 96 2ms 3 Oct 2024 441st voytxt 🇨🇿 718 89 136ms 17 Apr 2025 442nd mousetail 🇳🇱 718 111 17ms 6 Oct 2024 443rd snyderek 🇺🇸 718 121 53ms 1 Oct 2024 444th Shanethegamer 🇺🇸 715 101 5ms 2 Oct 2024 445th anter69 🇭🇺 714 67 37ms 1 Oct 2024 446th ovs-code 🇩🇪 714 75 1,104ms 1 Oct 2024 447th SirBogman 🇺🇸 713 93 503ms 23 Jul 2025 447th snoozingnewt 🇨🇦 713 93 469ms 6 Dec 2025 449th rzv-me 713 95 5ms 5 Oct 2024 450th h3ra993huskp 🇯🇵 713 131 422ms 30 Nov 2025 451st OllieBoyne 🇬🇧 712 112 17ms 17 Oct 2024 451st WillConker 712 112 12ms 22 Oct 2024 451st maxgodfrey2004 🇨🇦 712 112 10ms 4 Jan 2025 451st Babafaba 712 112 16ms 11 Nov 2025 455th Natanaelel 🇸🇪 709 55 34ms 1 Mar 2025 456th snoozingnewt 🇨🇦 709 95 79ms 23 Oct 2025 457th DialFrost 🇸🇬 709 106 12ms 13 Dec 2024 458th DialFrost 🇸🇬 707 132 224ms 8 Apr 2025 459th Alex-x90 🇺🇸 706 100 2ms 1 Oct 2024 460th Shanethegamer 🇺🇸 706 118 357ms 2 Oct 2024 461st BlankSpruce 706 123 402ms 1 Oct 2024 462nd cbrt-x 706 157 139ms 1 Oct 2024 463rd Shanethegamer 🇺🇸 706 172 39ms 2 Oct 2024 464th edsrzf 🇳🇿 705 76 1,005ms 1 Oct 2024 465th SB-945 705 113 17ms 1 Oct 2024 465th Artemis21 🇬🇧 705 113 17ms 23 Jan 2025 465th fkantelberg 705 113 10ms 11 Jul 2025 468th MeWhenI 🇻🇦 704 115 453ms 5 Oct 2024 469th Shanethegamer 🇺🇸 704 156 30ms 2 Oct 2024 470th janlelis 703 68 39ms 1 Oct 2024 471st emgordon154 702 76 5ms 7 Jun 2025 472nd Alex-x90 🇺🇸 701 124 398ms 1 Oct 2024 472nd Herbert00709 🇵🇱 701 124 56ms 14 Jun 2025 474th mousetail 🇳🇱 701 133 149ms 3 Oct 2024 475th LukeBridges 🇬🇧 700 92 11ms 3 Oct 2024 476th HumanoidCPU 699 114 64ms 7 Mar 2025 477th tobeannouncd 697 159 146ms 13 Dec 2024 478th MeWhenI 🇻🇦 697 174 41ms 13 Feb 2025 479th emgordon154 696 134 216ms 25 Feb 2025 480th Shanethegamer 🇺🇸 693 41 3ms 4 Oct 2024 First Prev 401–480 of 891 Next Last