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 Yax42 🇫🇷 635 111 2ms 13 days ago 562nd msbranicky 634 188 252ms 7 Jan 2025 563rd Shanethegamer 🇺🇸 631 74 287ms 16 Oct 2024 564th XenThe 🇬🇧 631 102 10ms 7 Jul 2025 564th Florian-Mt 631 102 9ms 5 Dec 2025 566th albanian-laundromat 631 264 1,421ms 3 Nov 2025 567th CatsAreFluffy 627 127 15ms 30 Oct 2024 567th WillowWispy 627 127 10ms 25 May 2025 569th DialFrost 🇸🇬 627 304 153ms 13 Aug 2025 570th AlephSquirrel 625 40 43ms 1 Oct 2024 571st not-a-pokemon 623 113 2ms 23 Jul 2025 572nd dokutan 623 127 2ms 10 Dec 2024 573rd codereport 🇨🇦 619 63 33ms 2 Oct 2024 574th BalaM314 619 104 9ms 4 Feb 2025 574th acollett89 619 104 10ms 15 Jul 2025 576th HumanoidCPU 619 107 475ms 17 Feb 2025 577th jupj 🇫🇮 618 114 2ms 20 Jul 2025 578th madex 🇩🇪 618 129 16ms 2 Oct 2024 578th RedzGoose 🇦🇺 618 129 13ms 15 Oct 2024 578th calebaitken 618 129 9ms 11 Apr 2025 578th rollershutter 618 129 17ms 20 Nov 2025 578th JOrE20 🇺🇸 618 129 17ms 1 Dec 2025 583rd MarcMush 🇫🇷 617 91 764ms 8 Oct 2024 584th Ripick 617 135 346ms 23 Mar 2025 585th Europe2048 613 130 9ms 2 Oct 2024 585th nstearns96 🇬🇧 613 130 16ms 2 Oct 2024 585th Stockoh 🇫🇷 613 130 16ms 4 Jul 2025 588th bac0id 612 141 405ms 10 Jan 2025 589th evnu 612 147 86ms 12 Oct 2025 590th Seanharrs 610 117 471ms 15 Nov 2024 591st kaascevich 609 134 121ms 9 Jul 2025 592nd inverseLorentz 🇦🇺 608 131 9ms 7 Oct 2024 592nd dokutan 608 131 10ms 19 Oct 2024 592nd sciencejiho 608 131 16ms 11 Feb 2025 592nd Jaydosu 608 131 9ms 11 Apr 2025 592nd Emutis 🇱🇹 608 131 9ms 11 Nov 2025 597th HumanoidCPU 607 106 10ms 7 Mar 2025 597th daveberlin 607 106 9ms 27 Jun 2025 599th MeWhenI 🇻🇦 607 111 88ms 2 Oct 2024 600th Shanethegamer 🇺🇸 606 154 145ms 3 Oct 2024 601st emgordon154 606 156 8ms 13 Dec 2024 602nd MeWhenI 🇻🇦 605 73 2ms 2 Oct 2024 603rd alemelis 604 93 448ms 1 Oct 2024 604th roguh 🇬🇹 602 117 1ms 13 Oct 2024 604th iczelia 🇩🇪 602 117 2ms 25 Sep 2025 606th Mabeloid 🇳🇴 599 133 9ms 2 Oct 2024 607th MeWhenI 🇻🇦 597 98 7ms 1 Oct 2024 608th dokutan 596 116 2ms 19 Nov 2025 609th arcpolaris 595 120 396ms 28 Jan 2025 610th dokutan 595 159 7ms 19 Oct 2024 611th SirBogman 🇺🇸 593 64 122ms 11 Jul 2025 612th bac0id 592 119 2ms 10 Jan 2025 613th tatzyr 🇯🇵 590 81 37ms 23 Dec 2024 614th RaBa21 🇭🇺 590 135 17ms 19 Jul 2025 615th DialFrost 🇸🇬 587 67 8ms 25 Jan 2025 616th Schmitt-Very-Cool 587 159 440ms 26 Sep 2025 617th sciencedjinn 586 136 9ms 8 Nov 2024 617th ihatethefrench 586 136 16ms 4 Jan 2025 617th Florian-Mt 586 136 19ms 5 Dec 2025 620th gigaprofisi 🇺🇸 585 110 9ms 11 Aug 2025 621st amazingalek 🇳🇴 585 122 458ms 20 days ago 622nd dokutan 584 174 5ms 21 Feb 2025 623rd olleicua 🇺🇸 583 82 36ms 18 Oct 2024 624th Mabeloid 🇳🇴 582 121 1ms 21 Oct 2025 625th kurkale6ka 582 137 21ms 16 Oct 2024 625th 4ndyJ 🇬🇧 582 137 10ms 14 Nov 2024 625th Mikey-Beep 🇬🇧 582 137 16ms 6 Aug 2025 625th wobblybits 582 137 15ms 17 Aug 2025 629th michelebastione 🇮🇹 580 123 418ms 26 Aug 2025 630th emgordon154 579 49 3ms 9 Dec 2025 631st MeWhenI 🇻🇦 576 331 15ms 2 Oct 2024 632nd 823126 575 112 9ms 13 Nov 2024 632nd dokutan 575 112 9ms 22 Jun 2025 632nd snoozingnewt 🇨🇦 575 112 9ms 2 Nov 2025 635th albanian-laundromat 574 77 2ms 3 Nov 2025 636th KatieLG 🇬🇧 574 99 1,368ms 1 Oct 2024 637th jgbaldwinbrown 573 123 2ms 7 days ago 638th scpchicken 🇵🇼 573 139 16ms 6 Oct 2024 638th tomh1012 573 139 17ms 5 days ago 640th NanduBC 569 140 10ms 1 Oct 2024 First Prev 561–640 of 867 Next Last