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 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 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 139ms 18 Nov 2024 333rd retrohun 769 63 20ms 2 Oct 2024 334th DialFrost 🇸🇬 769 90 2ms 18 Nov 2025 335th Waffle3z 769 103 2ms 2 Oct 2024 336th targrik 768 88 8ms 7 Feb 2025 337th lifthrasiir 🇰🇷 767 37 2ms 27 Nov 2024 338th didion0 🇺🇸 766 84 11ms 10 Jan 2025 339th luuumine 🇫🇷 766 92 1ms 5 Dec 2025 339th bzd7 766 92 2ms 7 Dec 2025 341st jatloe 766 104 9ms 1 Oct 2024 342nd MeWhenI 🇻🇦 765 109 334ms 2 Oct 2024 342nd edsrzf 🇳🇿 765 109 365ms 23 Jul 2025 344th ovs-code 🇩🇪 764 122 177ms 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 19ms 1 Oct 2024 351st jared-hughes 759 105 15ms 3 Oct 2024 351st mattyhempstead 759 105 27ms 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 DialFrost 🇸🇬 754 131 7ms 11 Dec 2024 358th 0xjac 🇨🇭 754 158 252ms 17 Jun 2025 359th MeWhenI 🇻🇦 753 88 425ms 2 Oct 2024 359th albanian-laundromat 753 88 475ms 3 Nov 2025 361st davecame 752 106 15ms 1 Oct 2024 361st starfihs 752 106 10ms 2 Oct 2024 361st rschwa6308 🇺🇸 752 106 16ms 28 Oct 2024 361st snydej 752 106 15ms 21 Nov 2024 361st andrewjc2000 752 106 15ms 17 Jul 2025 361st qpwoeirut 752 106 9ms 19 Aug 2025 367th GrayJoKing 🇦🇺 751 90 5ms 1 Oct 2024 368th stackofbears 750 52 35ms 14 Mar 2025 369th MeWhenI 🇻🇦 750 89 3,150ms 24 Oct 2024 370th stefangimmillaro 750 94 1ms 30 Oct 2024 371st MeWhenI 🇻🇦 749 162 26ms 2 Oct 2024 372nd Maznek 748 86 10ms 4 Oct 2024 373rd Shanethegamer 🇺🇸 748 132 7ms 2 Oct 2024 374th rak1507 🇬🇧 747 38 2ms 30 Dec 2024 375th Shanethegamer 🇺🇸 747 64 35ms 3 Oct 2024 375th Andriamanitra 🇫🇮 747 64 40ms 5 Oct 2024 377th MeWhenI 🇻🇦 747 106 1ms 2 Oct 2024 378th sean-niemann 🇺🇸 746 116 411ms 24 Oct 2024 378th luuumine 🇫🇷 746 116 430ms 15 Dec 2025 380th commandz0 🇺🇸 745 107 15ms 7 Oct 2024 380th zbreit 🇺🇸 745 107 16ms 29 Oct 2024 380th StardustGogeta 745 107 16ms 30 Oct 2024 380th ZakkkkAttackkkk 🇵🇭 745 107 16ms 8 Feb 2025 380th InigoK 🇺🇸 745 107 16ms 22 Sep 2025 385th Shanethegamer 🇺🇸 744 121 98ms 3 Oct 2024 386th sean-niemann 🇺🇸 743 93 120ms 24 Oct 2024 387th Natanaelel 🇸🇪 742 53 3ms 22 days ago 388th SirBogman 🇺🇸 741 63 283ms 23 Jul 2025 389th Shanethegamer 🇺🇸 741 90 2,981ms 28 Oct 2024 389th ScottHamper 741 90 3,373ms 11 Dec 2025 391st KrausRaus 🇺🇸 740 87 9ms 1 Oct 2024 391st GeorgeStechman 🇬🇧 740 87 9ms 24 Oct 2024 391st coreynash 740 87 9ms 13 Feb 2025 394th Shanethegamer 🇺🇸 740 156 30ms 2 Oct 2024 395th DialFrost 🇸🇬 739 76 825ms 9 Oct 2024 396th Shanethegamer 🇺🇸 739 172 39ms 2 Oct 2024 397th neihousaigaai 738 108 16ms 4 Oct 2024 397th StefanHabel 🇨🇦 738 108 16ms 23 Jan 2025 397th CaedenHarper 🇨🇦 738 108 16ms 22 Jul 2025 397th BrunoVisnadi 🇧🇷 738 108 16ms 1 Oct 2025 First Prev 321–400 of 871 Next Last