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 641st Mabeloid 🇳🇴 600 133 11ms 2 Oct 2024 642nd dokutan 598 116 2ms 19 Nov 2025 643rd MeWhenI 🇻🇦 597 98 7ms 1 Oct 2024 644th tomh1012 597 108 11ms 19 days ago 645th MeWhenI 🇻🇦 595 73 2ms 2 Oct 2024 646th arcpolaris 595 120 376ms 28 Jan 2025 647th dokutan 595 159 9ms 19 Oct 2024 648th SirBogman 🇺🇸 593 64 172ms 11 Jul 2025 649th bac0id 593 119 2ms 10 Jan 2025 650th tatzyr 🇯🇵 591 81 36ms 23 Dec 2024 651st RaBa21 🇭🇺 591 135 17ms 19 Jul 2025 652nd DialFrost 🇸🇬 588 67 9ms 25 Jan 2025 653rd Schmitt-Very-Cool 587 159 445ms 26 Sep 2025 654th dokutan 587 174 5ms 21 Feb 2025 655th gigaprofisi 🇺🇸 586 110 10ms 11 Aug 2025 656th sciencedjinn 586 136 10ms 8 Nov 2024 656th jastrzumb 586 136 18ms 4 Jan 2025 656th Florian-Mt 586 136 17ms 5 Dec 2025 659th amazingalek 🇳🇴 585 122 468ms 1 Jan 2026 660th olleicua 🇺🇸 584 82 38ms 18 Oct 2024 661st Mabeloid 🇳🇴 584 121 1ms 21 Oct 2025 662nd kurkale6ka 582 137 22ms 16 Oct 2024 662nd 4ndyJ 🇬🇧 582 137 11ms 14 Nov 2024 662nd Mikey-Beep 🇬🇧 582 137 17ms 6 Aug 2025 662nd wobblybits 582 137 19ms 17 Aug 2025 662nd Andrey2001 582 137 9ms 1 Feb 2026 662nd tomh1012 582 137 17ms 27 days ago 662nd Aquateraneal 🇺🇸 582 137 17ms 23 days ago 669th michelebastione 🇮🇹 580 123 431ms 26 Aug 2025 670th emgordon154 579 49 3ms 9 Dec 2025 671st 823126 576 112 10ms 13 Nov 2024 671st dokutan 576 112 9ms 22 Jun 2025 671st snoozingnewt 🇨🇦 576 112 10ms 2 Nov 2025 674th MeWhenI 🇻🇦 576 331 15ms 2 Oct 2024 675th KatieLG 🇬🇧 574 99 1,368ms 1 Oct 2024 676th jgbaldwinbrown 574 123 2ms 14 Jan 2026 677th scpchicken 🇵🇼 574 139 17ms 6 Oct 2024 678th NanduBC 570 140 9ms 1 Oct 2024 678th jmerle 🇳🇱 570 140 10ms 10 Jan 2025 678th RobertHoeh 570 140 11ms 3 Mar 2025 678th smilesformiles3 570 140 17ms 12 Jun 2025 678th artem-aramma 570 140 18ms 18 Jun 2025 683rd MeWhenI 🇻🇦 570 164 205ms 6 Oct 2024 684th janAkali 🇷🇺 567 147 355ms 22 days ago 685th FranklinJiaChen 566 141 10ms 2 Oct 2024 686th KatieLG 🇬🇧 563 85 35ms 12 Jan 2025 687th aliakseikalosha 562 127 434ms 10 Oct 2024 688th brimstonetrader 562 142 11ms 17 Oct 2024 688th codewrite 🇬🇧 562 142 10ms 5 May 2025 688th RobGLambert 562 142 17ms 8 Jun 2025 688th GodlyProgrammer1 562 142 18ms 22 Nov 2025 688th jbjd 562 142 11ms 4 Feb 2026 693rd dokutan 561 155 441ms 10 Feb 2026 694th ravnskjaer 🇩🇰 559 167 455ms 15 Dec 2025 695th FortuiteMan 🇫🇷 559 272 40ms 22 Nov 2025 696th GeneralFabian 558 143 10ms 9 Dec 2024 696th CutSandstone 558 143 10ms 30 Jan 2025 696th kistlerf 🇨🇭 558 143 17ms 19 May 2025 699th madex 🇩🇪 556 116 9ms 1 Oct 2024 699th denkyuu1 556 116 11ms 16 days ago 701st CaedenHarper 🇨🇦 555 104 1,364ms 24 Nov 2025 702nd hiichbindermax 554 144 17ms 2 Oct 2024 702nd mathisfun271 554 144 10ms 14 Oct 2024 702nd bob-th 554 144 10ms 22 Oct 2024 705th MeWhenI 🇻🇦 554 290 8ms 2 Oct 2024 706th mousetail 🇳🇱 552 128 2ms 3 Oct 2024 707th snoozingnewt 🇨🇦 552 148 126ms 20 Nov 2025 708th msbranicky 552 185 4ms 20 Jan 2025 709th edsrzf 🇳🇿 551 135 6ms 27 Feb 2025 710th JunkIce 550 145 10ms 3 Dec 2024 711th gpikmddk 549 130 417ms 30 Oct 2025 712th JDiLenarda 🇫🇷 549 165 1,394ms 1 Oct 2024 713th ethanlally 549 170 377ms 19 Nov 2025 713th snoozingnewt 🇨🇦 549 170 485ms 5 Dec 2025 715th Matter1024 🇮🇳 548 149 445ms 9 days ago 716th zakariamouhid 546 118 9ms 1 Oct 2024 717th croc54 546 146 10ms 15 Dec 2024 718th xyangst 546 171 171ms 1 Oct 2024 718th kmathis22 546 171 350ms 19 Nov 2025 720th najs91 545 131 391ms 15 Oct 2024 First Prev 641–720 of 921 Next Last