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 ><> ALGOL 68 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 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 ><> ALGOL 68 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 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 SirBogman 🇺🇸 785 138 39ms 11 Jul 2025 322nd Shanethegamer 🇺🇸 784 91 455ms 3 Oct 2024 323rd edsrzf 🇳🇿 784 119 153ms 23 Jul 2025 324th Shanethegamer 🇺🇸 784 152 281ms 3 Oct 2024 324th targrik 784 152 283ms 7 Jul 2025 326th AlephSquirrel 783 124 7ms 21 Oct 2024 327th annaproxy 782 102 17ms 1 Oct 2024 327th snoozingnewt 🇨🇦 782 102 9ms 6 Dec 2025 327th solisolu 782 102 10ms 31 Dec 2025 327th Flekay 🇩🇪 782 102 18ms 6 days ago 331st SirBogman 🇺🇸 780 50 32ms 8 Jul 2025 332nd albanian-laundromat 779 74 1,047ms 3 Nov 2025 333rd GrayJoKing 🇦🇺 779 82 134ms 1 Oct 2024 334th sean-niemann 🇺🇸 779 107 375ms 3 Oct 2024 335th m-tkach 🇺🇦 779 131 2ms 4 Oct 2024 336th Shanethegamer 🇺🇸 778 120 364ms 24 Sep 2025 337th adriweb 🇫🇷 777 102 1ms 5 Oct 2024 338th uttumuttu 🇫🇮 776 83 10ms 1 Oct 2024 338th KatieLG 🇬🇧 776 83 9ms 1 Oct 2024 338th Larento 776 83 10ms 4 Nov 2024 338th Andrey-Plotnikov 776 83 10ms 13 Jan 2025 338th nathanadams 🇳🇿 776 83 11ms 6 Oct 2025 343rd xsot 🇸🇬 776 125 7ms 20 Oct 2024 344th duckyluuk 🇳🇱 775 97 10ms 25 Nov 2025 345th Natanaelel 🇸🇪 775 143 145ms 20 Apr 2025 346th sisyphus-ppcg 🇦🇺 772 62 40ms 3 Oct 2024 347th DialFrost 🇸🇬 772 121 369ms 24 Sep 2025 348th DialFrost 🇸🇬 771 90 2ms 18 Nov 2025 349th sean-niemann 🇺🇸 771 105 461ms 1 Oct 2024 350th emgordon154 770 83 134ms 18 Nov 2024 351st targrik 770 88 8ms 7 Feb 2025 352nd Waffle3z 770 103 2ms 2 Oct 2024 353rd retrohun 769 63 20ms 2 Oct 2024 354th luuumine 🇫🇷 768 92 1ms 5 Dec 2025 354th bzd7 768 92 2ms 7 Dec 2025 356th lifthrasiir 🇰🇷 767 37 2ms 27 Nov 2024 357th didion0 🇺🇸 767 84 10ms 10 Jan 2025 358th jatloe 767 104 10ms 1 Oct 2024 359th MeWhenI 🇻🇦 765 109 372ms 2 Oct 2024 360th ovs-code 🇩🇪 764 122 157ms 25 Apr 2025 361st albanian-laundromat 763 118 84ms 13 Nov 2025 362nd Shanethegamer 🇺🇸 763 124 6ms 4 Oct 2024 363rd GolfingSuccess 🇬🇷 762 70 6ms 6 Jun 2025 364th MeWhenI 🇻🇦 761 89 6ms 2 Oct 2024 365th emgordon154 760 63 35ms 18 Nov 2024 365th SirBogman 🇺🇸 760 63 33ms 19 Jul 2025 367th DialFrost 🇸🇬 759 76 1,013ms 30 Aug 2025 368th sean-niemann 🇺🇸 759 93 1ms 24 Oct 2024 369th fourth-bit 759 105 17ms 1 Oct 2024 369th jared-hughes 759 105 16ms 3 Oct 2024 369th mattyhempstead 759 105 26ms 7 Oct 2024 372nd weliveinhell 🇭🇹 758 85 10ms 1 Oct 2024 372nd SteRoy 758 85 11ms 13 May 2025 374th CLOStrophobic 🇮🇹 758 160 40ms 27 Feb 2025 375th MeWhenI 🇻🇦 754 88 440ms 2 Oct 2024 375th albanian-laundromat 754 88 462ms 3 Nov 2025 377th 0xjac 🇨🇭 754 158 287ms 17 Jun 2025 378th GrayJoKing 🇦🇺 753 90 5ms 1 Oct 2024 379th davecame 752 106 17ms 1 Oct 2024 379th starfihs 752 106 10ms 2 Oct 2024 379th rschwa6308 🇺🇸 752 106 16ms 28 Oct 2024 379th snydej 752 106 17ms 21 Nov 2024 379th andrewjc2000 752 106 17ms 17 Jul 2025 379th qpwoeirut 752 106 10ms 19 Aug 2025 379th KatieLG 🇬🇧 752 106 17ms 14 days ago 386th stefangimmillaro 751 94 1ms 30 Oct 2024 386th emgordon154 751 94 2ms 17 days ago 388th stackofbears 750 52 34ms 14 Mar 2025 389th MeWhenI 🇻🇦 750 89 2,127ms 24 Oct 2024 390th Maznek 749 86 10ms 4 Oct 2024 391st sean-niemann 🇺🇸 749 116 448ms 24 Oct 2024 391st luuumine 🇫🇷 749 116 431ms 15 Dec 2025 393rd MeWhenI 🇻🇦 749 162 26ms 2 Oct 2024 394th Shanethegamer 🇺🇸 748 64 35ms 3 Oct 2024 394th Andriamanitra 🇫🇮 748 64 36ms 5 Oct 2024 396th MeWhenI 🇻🇦 748 106 1ms 2 Oct 2024 397th rak1507 🇬🇧 747 38 2ms 30 Dec 2024 398th sean-niemann 🇺🇸 747 93 111ms 24 Oct 2024 399th commandz0 🇺🇸 745 107 17ms 7 Oct 2024 399th zbreit 🇺🇸 745 107 16ms 29 Oct 2024 First Prev 321–400 of 902 Next Last