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 Gray Code Decoder Gray Code Encoder 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 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 Gray Code Decoder Gray Code Encoder 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 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 639th Jaydosu 609 131 11ms 11 Apr 2025 639th Emutis 🇱🇹 609 131 10ms 11 Nov 2025 643rd kaascevich 609 134 124ms 9 Jul 2025 644th HumanoidCPU 608 106 11ms 7 Mar 2025 644th daveberlin 608 106 9ms 27 Jun 2025 646th MeWhenI 🇻🇦 607 111 89ms 2 Oct 2024 647th emgordon154 606 156 8ms 13 Dec 2024 648th alemelis 605 93 467ms 1 Oct 2024 649th roguh 🇬🇹 604 117 1ms 13 Oct 2024 649th iczelia 🇩🇪 604 117 2ms 25 Sep 2025 651st albanian-laundromat 🇺🇸 603 72 1ms 25 Feb 2026 652nd Mabeloid 🇳🇴 600 133 10ms 2 Oct 2024 653rd dokutan 598 116 2ms 19 Nov 2025 654th MeWhenI 🇻🇦 597 98 7ms 1 Oct 2024 655th tomh1012 597 108 10ms 12 Mar 2026 656th SirBogman 🇺🇸 595 64 152ms 11 Jul 2025 657th MeWhenI 🇻🇦 595 73 2ms 2 Oct 2024 658th arcpolaris 595 120 376ms 28 Jan 2025 659th dokutan 595 159 8ms 19 Oct 2024 660th bac0id 594 119 2ms 10 Jan 2025 661st tatzyr 🇯🇵 591 81 36ms 23 Dec 2024 661st denkyuu1 591 81 35ms 8 days ago 663rd RaBa21 🇭🇺 591 135 17ms 19 Jul 2025 664th DialFrost 🇸🇬 589 67 8ms 25 Jan 2025 665th Schmitt-Very-Cool 587 159 445ms 26 Sep 2025 666th dokutan 587 174 5ms 21 Feb 2025 667th gigaprofisi 🇺🇸 586 110 13ms 11 Aug 2025 667th denkyuu1 586 110 11ms 5 days ago 669th sciencedjinn 586 136 10ms 8 Nov 2024 669th mchalunderscore 586 136 20ms 4 Jan 2025 669th Florian-Mt 586 136 17ms 5 Dec 2025 672nd amazingalek 🇳🇴 585 122 468ms 1 Jan 2026 673rd olleicua 🇺🇸 584 82 38ms 18 Oct 2024 674th Mabeloid 🇳🇴 584 121 1ms 21 Oct 2025 675th kurkale6ka 582 137 29ms 16 Oct 2024 675th 4ndyJ 🇬🇧 582 137 12ms 14 Nov 2024 675th Mikey-Beep 🇬🇧 582 137 18ms 6 Aug 2025 675th wobblybits 582 137 18ms 17 Aug 2025 675th Andrey2001 582 137 16ms 1 Feb 2026 675th tomh1012 582 137 18ms 4 Mar 2026 675th Aquateraneal 🇺🇸 582 137 18ms 8 Mar 2026 682nd emgordon154 580 49 3ms 9 Dec 2025 683rd michelebastione 🇮🇹 580 123 427ms 26 Aug 2025 684th 823126 576 112 10ms 13 Nov 2024 684th dokutan 576 112 11ms 22 Jun 2025 684th snoozingnewt 🇨🇦 576 112 10ms 2 Nov 2025 684th RealBen9 🇬🇧 576 112 10ms 100 mins ago 688th MeWhenI 🇻🇦 576 331 15ms 2 Oct 2024 689th jgbaldwinbrown 575 123 2ms 14 Jan 2026 690th KatieLG 🇬🇧 574 99 1,368ms 1 Oct 2024 691st MeWhenI 🇻🇦 572 164 205ms 6 Oct 2024 692nd NanduBC 570 140 11ms 1 Oct 2024 692nd jmerle 🇳🇱 570 140 10ms 10 Jan 2025 692nd RobertHoeh 570 140 10ms 3 Mar 2025 692nd smilesformiles3 570 140 18ms 12 Jun 2025 692nd artem-aramma 570 140 16ms 18 Jun 2025 697th janAkali 🇷🇺 567 147 355ms 10 Mar 2026 698th FranklinJiaChen 566 141 13ms 2 Oct 2024 699th KatieLG 🇬🇧 564 85 35ms 12 Jan 2025 700th aliakseikalosha 562 127 420ms 10 Oct 2024 701st brimstonetrader 562 142 16ms 17 Oct 2024 701st codewrite 🇬🇧 562 142 12ms 5 May 2025 701st RobGLambert 562 142 19ms 8 Jun 2025 701st GodlyProgrammer1 562 142 18ms 22 Nov 2025 701st jbjd 562 142 11ms 4 Feb 2026 706th dokutan 561 155 435ms 10 Feb 2026 707th ravnskjaer 🇩🇰 559 167 455ms 15 Dec 2025 708th FortuiteMan 🇫🇷 559 272 40ms 22 Nov 2025 709th GeneralFabian 558 143 10ms 9 Dec 2024 709th CutSandstone 558 143 11ms 30 Jan 2025 709th kistlerf 🇨🇭 558 143 17ms 19 May 2025 712th madex 🇩🇪 556 116 14ms 1 Oct 2024 713th CaedenHarper 🇨🇦 555 104 1,098ms 24 Nov 2025 714th hiichbindermax 554 144 19ms 2 Oct 2024 714th mathisfun271 554 144 12ms 14 Oct 2024 714th bob-th 554 144 11ms 22 Oct 2024 717th MeWhenI 🇻🇦 554 290 8ms 2 Oct 2024 718th mousetail 🇳🇱 552 128 2ms 3 Oct 2024 719th snoozingnewt 🇨🇦 552 148 126ms 20 Nov 2025 720th msbranicky 552 185 4ms 20 Jan 2025 First Prev 641–720 of 933 Next Last