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 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 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 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 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 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 Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 641st MeWhenI 🇻🇦 595 73 2ms 2 Oct 2024 642nd arcpolaris 595 120 376ms 28 Jan 2025 643rd dokutan 595 159 9ms 19 Oct 2024 644th SirBogman 🇺🇸 593 64 124ms 11 Jul 2025 645th bac0id 593 119 2ms 10 Jan 2025 646th tatzyr 🇯🇵 591 81 36ms 23 Dec 2024 647th RaBa21 🇭🇺 591 135 17ms 19 Jul 2025 648th DialFrost 🇸🇬 588 67 9ms 25 Jan 2025 649th Schmitt-Very-Cool 587 159 445ms 26 Sep 2025 650th dokutan 587 174 5ms 21 Feb 2025 651st gigaprofisi 🇺🇸 586 110 10ms 11 Aug 2025 652nd sciencedjinn 586 136 10ms 8 Nov 2024 652nd jastrzumb 586 136 18ms 4 Jan 2025 652nd Florian-Mt 586 136 17ms 5 Dec 2025 655th amazingalek 🇳🇴 585 122 468ms 1 Jan 2026 656th olleicua 🇺🇸 584 82 38ms 18 Oct 2024 657th Mabeloid 🇳🇴 584 121 1ms 21 Oct 2025 658th kurkale6ka 582 137 22ms 16 Oct 2024 658th 4ndyJ 🇬🇧 582 137 11ms 14 Nov 2024 658th Mikey-Beep 🇬🇧 582 137 17ms 6 Aug 2025 658th wobblybits 582 137 19ms 17 Aug 2025 658th Andrey2001 582 137 9ms 1 Feb 2026 658th tomh1012 582 137 17ms 17 days ago 658th Aquateraneal 🇺🇸 582 137 17ms 12 days ago 665th michelebastione 🇮🇹 580 123 431ms 26 Aug 2025 666th emgordon154 579 49 3ms 9 Dec 2025 667th MeWhenI 🇻🇦 576 331 15ms 2 Oct 2024 668th 823126 575 112 10ms 13 Nov 2024 668th dokutan 575 112 9ms 22 Jun 2025 668th snoozingnewt 🇨🇦 575 112 9ms 2 Nov 2025 671st KatieLG 🇬🇧 574 99 1,368ms 1 Oct 2024 672nd jgbaldwinbrown 574 123 2ms 14 Jan 2026 673rd scpchicken 🇵🇼 574 139 17ms 6 Oct 2024 674th NanduBC 570 140 9ms 1 Oct 2024 674th jmerle 🇳🇱 570 140 10ms 10 Jan 2025 674th RobertHoeh 570 140 11ms 3 Mar 2025 674th smilesformiles3 570 140 17ms 12 Jun 2025 674th artem-aramma 570 140 18ms 18 Jun 2025 679th MeWhenI 🇻🇦 570 164 197ms 6 Oct 2024 680th janAkali 🇷🇺 567 147 355ms 11 days ago 681st FranklinJiaChen 566 141 10ms 2 Oct 2024 682nd KatieLG 🇬🇧 563 85 35ms 12 Jan 2025 683rd aliakseikalosha 562 127 434ms 10 Oct 2024 684th brimstonetrader 562 142 11ms 17 Oct 2024 684th codewrite 🇬🇧 562 142 10ms 5 May 2025 684th RobGLambert 562 142 17ms 8 Jun 2025 684th GodlyProgrammer1 562 142 18ms 22 Nov 2025 684th jbjd 562 142 11ms 4 Feb 2026 689th dokutan 561 155 464ms 10 Feb 2026 690th ravnskjaer 🇩🇰 559 167 455ms 15 Dec 2025 691st FortuiteMan 🇫🇷 559 272 40ms 22 Nov 2025 692nd GeneralFabian 558 143 10ms 9 Dec 2024 692nd CutSandstone 558 143 10ms 30 Jan 2025 692nd kistlerf 🇨🇭 558 143 17ms 19 May 2025 695th madex 🇩🇪 556 116 9ms 1 Oct 2024 695th denkyuu1 556 116 11ms 6 days ago 697th CaedenHarper 🇨🇦 555 104 1,139ms 24 Nov 2025 698th hiichbindermax 554 144 17ms 2 Oct 2024 698th mathisfun271 554 144 10ms 14 Oct 2024 698th bob-th 554 144 10ms 22 Oct 2024 701st MeWhenI 🇻🇦 554 290 8ms 2 Oct 2024 702nd JDiLenarda 🇫🇷 553 165 1,394ms 1 Oct 2024 703rd mousetail 🇳🇱 552 128 2ms 3 Oct 2024 704th snoozingnewt 🇨🇦 552 148 122ms 20 Nov 2025 705th msbranicky 552 185 4ms 20 Jan 2025 706th edsrzf 🇳🇿 551 135 6ms 27 Feb 2025 707th JunkIce 550 145 10ms 3 Dec 2024 708th gpikmddk 549 130 417ms 30 Oct 2025 709th ethanlally 549 170 377ms 19 Nov 2025 709th snoozingnewt 🇨🇦 549 170 485ms 5 Dec 2025 711th zakariamouhid 546 118 10ms 1 Oct 2024 712th croc54 546 146 10ms 15 Dec 2024 713th xyangst 546 171 178ms 1 Oct 2024 713th kmathis22 546 171 350ms 19 Nov 2025 715th najs91 545 131 391ms 15 Oct 2024 715th bac0id 545 131 422ms 9 Jan 2025 715th CaedenHarper 🇨🇦 545 131 370ms 17 Oct 2025 718th eranws 542 119 9ms 23 Dec 2024 719th PyryL 🇫🇮 542 147 10ms 1 Mar 2025 720th dokutan 539 107 814ms 8 days ago First Prev 641–720 of 913 Next Last