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 ><> ALGOL 68 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 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 ><> ALGOL 68 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 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 399th StardustGogeta 745 107 17ms 30 Oct 2024 399th ZakkkkAttackkkk 🇵🇭 745 107 16ms 8 Feb 2025 399th InigoK 🇺🇸 745 107 17ms 22 Sep 2025 399th Lv0Sys 🇵🇱 745 107 17ms 3 days ago 405th Shanethegamer 🇺🇸 744 121 98ms 3 Oct 2024 406th Natanaelel 🇸🇪 743 53 3ms 10 Jan 2026 407th SirBogman 🇺🇸 741 63 283ms 23 Jul 2025 408th Shanethegamer 🇺🇸 741 90 2,349ms 28 Oct 2024 408th ScottHamper 741 90 2,298ms 11 Dec 2025 410th DialFrost 🇸🇬 741 131 7ms 11 Dec 2024 411th KrausRaus 🇺🇸 740 87 10ms 1 Oct 2024 411th GeorgeStechman 🇬🇧 740 87 10ms 24 Oct 2024 411th coreynash 740 87 9ms 13 Feb 2025 414th DialFrost 🇸🇬 739 76 813ms 9 Oct 2024 415th neihousaigaai 738 108 17ms 4 Oct 2024 415th StefanHabel 🇨🇦 738 108 15ms 23 Jan 2025 415th CaedenHarper 🇨🇦 738 108 17ms 22 Jul 2025 415th BrunoVisnadi 🇧🇷 738 108 16ms 1 Oct 2025 419th lifthrasiir 🇰🇷 737 90 459ms 2 Dec 2024 420th anter69 🇭🇺 736 65 35ms 70 mins ago 421st stefangimmillaro 736 92 8ms 2 Oct 2024 421st Shanethegamer 🇺🇸 736 92 5ms 3 Oct 2024 423rd MeWhenI 🇻🇦 736 111 116ms 2 Oct 2024 424th MeWhenI 🇻🇦 735 34 55ms 2 Oct 2024 424th emgordon154 735 34 63ms 11 Sep 2025 424th plcc0 735 34 68ms 25 days ago 427th Shanethegamer 🇺🇸 735 100 117ms 24 May 2025 428th Shanethegamer 🇺🇸 735 132 7ms 2 Oct 2024 429th Kacarott 🇦🇺 734 73 1,111ms 1 Oct 2024 429th chunes3 🇺🇸 734 73 1,046ms 2 Oct 2024 431st Shanethegamer 🇺🇸 733 116 1,027ms 1 Oct 2024 432nd kirjavascript 732 88 15ms 15 Mar 2025 433rd stefangimmillaro 731 114 376ms 13 Oct 2024 434th edsrzf 🇳🇿 730 52 113ms 16 Jan 2026 435th Shanethegamer 🇺🇸 729 112 99ms 3 Oct 2024 436th error256 728 98 416ms 17 Jan 2026 437th MeWhenI 🇻🇦 726 88 131ms 2 Oct 2024 437th Shanethegamer 🇺🇸 726 88 140ms 8 Jan 2025 439th cros107 🇦🇺 725 110 17ms 1 Jan 2025 439th guilhem-roy 🇫🇷 725 110 17ms 29 May 2025 441st dtbao20 🇻🇳 724 89 10ms 1 Oct 2024 441st madeforlosers 724 89 10ms 17 Oct 2024 441st junkondo-jp 724 89 9ms 14 Dec 2024 441st alexsave 724 89 9ms 20 Jan 2026 445th Shanethegamer 🇺🇸 724 126 1,391ms 2 Oct 2024 446th Shanethegamer 🇺🇸 723 96 2ms 3 Oct 2024 447th annaproxy 723 132 15ms 1 Oct 2024 448th MeWhenI 🇻🇦 721 179 1,697ms 7 Nov 2025 449th weeble 720 74 6ms 1 Jul 2025 450th MeWhenI 🇻🇦 720 78 316ms 2 Oct 2024 451st voytxt 🇨🇿 718 89 136ms 17 Apr 2025 452nd mousetail 🇳🇱 718 111 17ms 6 Oct 2024 453rd snyderek 🇺🇸 718 121 59ms 1 Oct 2024 454th Shanethegamer 🇺🇸 715 101 5ms 2 Oct 2024 455th ovs-code 🇩🇪 714 75 1,104ms 1 Oct 2024 456th SirBogman 🇺🇸 713 93 503ms 23 Jul 2025 456th snoozingnewt 🇨🇦 713 93 469ms 6 Dec 2025 458th rzv-me 713 95 5ms 5 Oct 2024 459th h3ra993huskp 🇯🇵 713 131 422ms 30 Nov 2025 460th OllieBoyne 🇬🇧 712 112 17ms 17 Oct 2024 460th WillConker 712 112 12ms 22 Oct 2024 460th maxgodfrey2004 🇨🇦 712 112 10ms 4 Jan 2025 460th Babafaba 712 112 16ms 11 Nov 2025 464th Natanaelel 🇸🇪 709 55 34ms 1 Mar 2025 465th snoozingnewt 🇨🇦 709 95 79ms 23 Oct 2025 466th DialFrost 🇸🇬 709 106 12ms 13 Dec 2024 467th DialFrost 🇸🇬 707 132 224ms 8 Apr 2025 468th Alex-x90 🇺🇸 706 100 2ms 1 Oct 2024 469th SB-945 706 113 17ms 1 Oct 2024 469th Artemis21 🇬🇧 706 113 17ms 23 Jan 2025 469th fkantelberg 706 113 10ms 11 Jul 2025 472nd Shanethegamer 🇺🇸 706 118 379ms 2 Oct 2024 473rd BlankSpruce 706 123 423ms 1 Oct 2024 474th cbrt-x 706 157 139ms 1 Oct 2024 475th Shanethegamer 🇺🇸 706 172 39ms 2 Oct 2024 476th edsrzf 🇳🇿 705 76 1,005ms 1 Oct 2024 477th janlelis 704 68 39ms 1 Oct 2024 478th MeWhenI 🇻🇦 704 115 453ms 5 Oct 2024 479th Shanethegamer 🇺🇸 704 156 30ms 2 Oct 2024 480th emgordon154 702 76 5ms 7 Jun 2025 First Prev 401–480 of 902 Next Last