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 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 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 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 Lily 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 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 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 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 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 321st m-tkach 🇺🇦 776 131 3ms 4 Oct 2024 322nd uttumuttu 🇫🇮 775 83 9ms 1 Oct 2024 322nd KatieLG 🇬🇧 775 83 12ms 1 Oct 2024 322nd Larento 775 83 10ms 4 Nov 2024 322nd Andrey-Plotnikov 775 83 11ms 13 Jan 2025 322nd nathanadams 🇳🇿 775 83 10ms 6 Oct 2025 327th duckyluuk 🇳🇱 775 97 10ms 25 Nov 2025 328th Natanaelel 🇸🇪 775 143 145ms 20 Apr 2025 329th DialFrost 🇸🇬 772 121 369ms 24 Sep 2025 330th sisyphus-ppcg 🇦🇺 771 62 53ms 3 Oct 2024 331st sean-niemann 🇺🇸 771 105 440ms 1 Oct 2024 332nd emgordon154 770 83 134ms 18 Nov 2024 333rd Waffle3z 770 103 2ms 2 Oct 2024 334th retrohun 769 63 20ms 2 Oct 2024 335th DialFrost 🇸🇬 769 90 2ms 18 Nov 2025 336th targrik 768 88 8ms 7 Feb 2025 337th lifthrasiir 🇰🇷 767 37 2ms 27 Nov 2024 338th luuumine 🇫🇷 767 92 1ms 5 Dec 2025 338th bzd7 767 92 2ms 7 Dec 2025 340th didion0 🇺🇸 766 84 11ms 10 Jan 2025 341st jatloe 766 104 11ms 1 Oct 2024 342nd MeWhenI 🇻🇦 765 109 334ms 2 Oct 2024 342nd edsrzf 🇳🇿 765 109 365ms 23 Jul 2025 344th ovs-code 🇩🇪 764 122 160ms 25 Apr 2025 345th albanian-laundromat 763 118 84ms 13 Nov 2025 346th Shanethegamer 🇺🇸 763 124 6ms 4 Oct 2024 347th GolfingSuccess 🇬🇷 762 70 6ms 6 Jun 2025 348th emgordon154 759 63 35ms 18 Nov 2024 348th SirBogman 🇺🇸 759 63 33ms 19 Jul 2025 350th MeWhenI 🇻🇦 759 89 5ms 2 Oct 2024 351st fourth-bit 759 105 17ms 1 Oct 2024 351st jared-hughes 759 105 18ms 3 Oct 2024 351st mattyhempstead 759 105 29ms 7 Oct 2024 354th sean-niemann 🇺🇸 758 93 3ms 24 Oct 2024 355th weliveinhell 🇭🇹 757 85 9ms 1 Oct 2024 355th SteRoy 757 85 10ms 13 May 2025 357th frosster 755 105 2ms 105 mins ago 358th DialFrost 🇸🇬 754 131 7ms 11 Dec 2024 359th 0xjac 🇨🇭 754 158 284ms 17 Jun 2025 360th MeWhenI 🇻🇦 753 88 440ms 2 Oct 2024 360th albanian-laundromat 753 88 462ms 3 Nov 2025 362nd davecame 752 106 18ms 1 Oct 2024 362nd starfihs 752 106 10ms 2 Oct 2024 362nd rschwa6308 🇺🇸 752 106 16ms 28 Oct 2024 362nd snydej 752 106 17ms 21 Nov 2024 362nd andrewjc2000 752 106 17ms 17 Jul 2025 362nd qpwoeirut 752 106 10ms 19 Aug 2025 368th GrayJoKing 🇦🇺 751 90 5ms 1 Oct 2024 369th stackofbears 750 52 35ms 14 Mar 2025 370th MeWhenI 🇻🇦 750 89 2,127ms 24 Oct 2024 371st stefangimmillaro 750 94 1ms 30 Oct 2024 372nd MeWhenI 🇻🇦 749 162 26ms 2 Oct 2024 373rd Maznek 748 86 10ms 4 Oct 2024 374th MeWhenI 🇻🇦 748 106 1ms 2 Oct 2024 375th Shanethegamer 🇺🇸 748 132 7ms 2 Oct 2024 376th rak1507 🇬🇧 747 38 2ms 30 Dec 2024 377th Shanethegamer 🇺🇸 747 64 35ms 3 Oct 2024 377th Andriamanitra 🇫🇮 747 64 40ms 5 Oct 2024 379th sean-niemann 🇺🇸 747 116 411ms 24 Oct 2024 379th luuumine 🇫🇷 747 116 430ms 15 Dec 2025 381st commandz0 🇺🇸 745 107 17ms 7 Oct 2024 381st zbreit 🇺🇸 745 107 17ms 29 Oct 2024 381st StardustGogeta 745 107 19ms 30 Oct 2024 381st ZakkkkAttackkkk 🇵🇭 745 107 17ms 8 Feb 2025 381st InigoK 🇺🇸 745 107 17ms 22 Sep 2025 386th Shanethegamer 🇺🇸 744 121 98ms 3 Oct 2024 387th sean-niemann 🇺🇸 743 93 120ms 24 Oct 2024 388th Natanaelel 🇸🇪 742 53 3ms 27 days ago 389th SirBogman 🇺🇸 741 63 283ms 23 Jul 2025 390th Shanethegamer 🇺🇸 741 90 2,349ms 28 Oct 2024 390th ScottHamper 741 90 2,298ms 11 Dec 2025 392nd KrausRaus 🇺🇸 740 87 9ms 1 Oct 2024 392nd GeorgeStechman 🇬🇧 740 87 9ms 24 Oct 2024 392nd coreynash 740 87 9ms 13 Feb 2025 395th DialFrost 🇸🇬 739 76 825ms 9 Oct 2024 396th Shanethegamer 🇺🇸 739 172 39ms 2 Oct 2024 397th neihousaigaai 738 108 17ms 4 Oct 2024 397th StefanHabel 🇨🇦 738 108 15ms 23 Jan 2025 397th CaedenHarper 🇨🇦 738 108 17ms 22 Jul 2025 397th BrunoVisnadi 🇧🇷 738 108 16ms 1 Oct 2025 First Prev 321–400 of 876 Next Last