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 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 Multitap Input 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 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 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 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 Multitap Input 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 561st Shanethegamer 🇺🇸 631 74 252ms 16 Oct 2024 562nd XenThe 🇬🇧 631 102 10ms 7 Jul 2025 562nd Florian-Mt 631 102 11ms 5 Dec 2025 564th albanian-laundromat 631 264 1,493ms 3 Nov 2025 565th CatsAreFluffy 627 127 15ms 30 Oct 2024 565th WillowWispy 627 127 10ms 25 May 2025 567th DialFrost 🇸🇬 627 304 153ms 13 Aug 2025 568th AlephSquirrel 625 40 42ms 1 Oct 2024 569th not-a-pokemon 623 113 2ms 23 Jul 2025 570th dokutan 623 127 2ms 10 Dec 2024 571st codereport 🇨🇦 619 63 33ms 2 Oct 2024 572nd BalaM314 619 104 10ms 4 Feb 2025 572nd acollett89 619 104 10ms 15 Jul 2025 574th HumanoidCPU 619 107 475ms 17 Feb 2025 575th madex 🇩🇪 618 129 16ms 2 Oct 2024 575th RedzGoose 🇦🇺 618 129 13ms 15 Oct 2024 575th calebaitken 618 129 9ms 11 Apr 2025 575th rollershutter 618 129 17ms 20 Nov 2025 575th JOrE20 🇺🇸 618 129 17ms 1 Dec 2025 580th MarcMush 🇫🇷 617 91 764ms 8 Oct 2024 581st jupj 🇫🇮 617 114 2ms 20 Jul 2025 582nd Ripick 617 135 346ms 23 Mar 2025 583rd Europe2048 613 130 9ms 2 Oct 2024 583rd nstearns96 🇬🇧 613 130 16ms 2 Oct 2024 583rd Stockoh 🇫🇷 613 130 16ms 4 Jul 2025 586th bac0id 612 141 410ms 10 Jan 2025 587th evnu 612 147 80ms 12 Oct 2025 588th Seanharrs 610 117 470ms 15 Nov 2024 589th kaascevich 609 134 121ms 9 Jul 2025 590th inverseLorentz 🇦🇺 608 131 9ms 7 Oct 2024 590th dokutan 608 131 10ms 19 Oct 2024 590th sciencejiho 608 131 16ms 11 Feb 2025 590th Jaydosu 608 131 9ms 11 Apr 2025 590th Emutis 🇱🇹 608 131 9ms 11 Nov 2025 595th HumanoidCPU 607 106 10ms 7 Mar 2025 595th daveberlin 607 106 9ms 27 Jun 2025 597th MeWhenI 🇻🇦 607 111 88ms 2 Oct 2024 598th Shanethegamer 🇺🇸 606 154 145ms 3 Oct 2024 599th emgordon154 606 156 9ms 13 Dec 2024 600th MeWhenI 🇻🇦 605 73 2ms 2 Oct 2024 601st alemelis 604 93 448ms 1 Oct 2024 602nd roguh 🇬🇹 602 117 1ms 13 Oct 2024 602nd iczelia 🇩🇪 602 117 2ms 25 Sep 2025 604th Mabeloid 🇳🇴 599 133 9ms 2 Oct 2024 605th MeWhenI 🇻🇦 597 98 7ms 1 Oct 2024 606th dokutan 596 116 2ms 19 Nov 2025 607th arcpolaris 595 120 351ms 28 Jan 2025 608th dokutan 595 159 7ms 19 Oct 2024 609th SirBogman 🇺🇸 591 64 138ms 11 Jul 2025 610th bac0id 591 119 2ms 10 Jan 2025 611th tatzyr 🇯🇵 590 81 37ms 23 Dec 2024 612th RaBa21 🇭🇺 590 135 17ms 19 Jul 2025 613th DialFrost 🇸🇬 587 67 8ms 25 Jan 2025 614th sciencedjinn 586 136 9ms 8 Nov 2024 614th ihatethefrench 586 136 16ms 4 Jan 2025 614th Florian-Mt 586 136 19ms 5 Dec 2025 617th Schmitt-Very-Cool 586 159 440ms 26 Sep 2025 618th gigaprofisi 🇺🇸 585 110 9ms 11 Aug 2025 619th amazingalek 585 122 453ms 9 days ago 620th dokutan 584 174 5ms 21 Feb 2025 621st olleicua 🇺🇸 583 82 34ms 18 Oct 2024 622nd Mabeloid 🇳🇴 582 121 1ms 21 Oct 2025 623rd kurkale6ka 582 137 21ms 16 Oct 2024 623rd 4ndyJ 🇬🇧 582 137 10ms 14 Nov 2024 623rd Mikey-Beep 🇬🇧 582 137 16ms 6 Aug 2025 623rd wobblybits 582 137 15ms 17 Aug 2025 627th michelebastione 🇮🇹 580 123 404ms 26 Aug 2025 628th emgordon154 579 49 3ms 9 Dec 2025 629th MeWhenI 🇻🇦 576 331 15ms 2 Oct 2024 630th 823126 575 112 10ms 13 Nov 2024 630th dokutan 575 112 10ms 22 Jun 2025 630th snoozingnewt 🇨🇦 575 112 10ms 2 Nov 2025 633rd albanian-laundromat 574 77 2ms 3 Nov 2025 634th KatieLG 🇬🇧 574 99 1,081ms 1 Oct 2024 635th scpchicken 🇵🇼 573 139 16ms 6 Oct 2024 636th NanduBC 569 140 10ms 1 Oct 2024 636th jmerle 🇳🇱 569 140 10ms 10 Jan 2025 636th RobertHoeh 569 140 9ms 3 Mar 2025 636th smilesformiles3 569 140 15ms 12 Jun 2025 636th artem-aramma 569 140 18ms 18 Jun 2025 First Prev 561–640 of 858 Next Last