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 Shanethegamer 🇺🇸 784 91 455ms 3 Oct 2024 322nd edsrzf 🇳🇿 784 119 153ms 23 Jul 2025 323rd Shanethegamer 🇺🇸 784 152 281ms 3 Oct 2024 323rd targrik 784 152 283ms 7 Jul 2025 325th AlephSquirrel 783 124 7ms 21 Oct 2024 326th annaproxy 782 102 17ms 1 Oct 2024 326th snoozingnewt 🇨🇦 782 102 9ms 6 Dec 2025 326th solisolu 782 102 10ms 31 Dec 2025 326th Flekay 🇩🇪 782 102 18ms 6 days ago 330th SirBogman 🇺🇸 780 50 32ms 8 Jul 2025 331st albanian-laundromat 779 74 1,047ms 3 Nov 2025 332nd GrayJoKing 🇦🇺 779 82 134ms 1 Oct 2024 333rd sean-niemann 🇺🇸 779 107 375ms 3 Oct 2024 334th m-tkach 🇺🇦 779 131 2ms 4 Oct 2024 335th Shanethegamer 🇺🇸 778 120 364ms 24 Sep 2025 336th adriweb 🇫🇷 777 102 1ms 5 Oct 2024 337th uttumuttu 🇫🇮 776 83 10ms 1 Oct 2024 337th KatieLG 🇬🇧 776 83 9ms 1 Oct 2024 337th Larento 776 83 10ms 4 Nov 2024 337th Andrey-Plotnikov 776 83 10ms 13 Jan 2025 337th nathanadams 🇳🇿 776 83 11ms 6 Oct 2025 342nd xsot 🇸🇬 776 125 7ms 20 Oct 2024 343rd duckyluuk 🇳🇱 775 97 10ms 25 Nov 2025 344th Natanaelel 🇸🇪 775 143 145ms 20 Apr 2025 345th sisyphus-ppcg 🇦🇺 772 62 40ms 3 Oct 2024 346th DialFrost 🇸🇬 772 121 369ms 24 Sep 2025 347th DialFrost 🇸🇬 771 90 2ms 18 Nov 2025 348th sean-niemann 🇺🇸 771 105 461ms 1 Oct 2024 349th emgordon154 770 83 134ms 18 Nov 2024 350th targrik 770 88 8ms 7 Feb 2025 351st Waffle3z 770 103 2ms 2 Oct 2024 352nd retrohun 769 63 20ms 2 Oct 2024 353rd luuumine 🇫🇷 768 92 1ms 5 Dec 2025 353rd bzd7 768 92 2ms 7 Dec 2025 355th lifthrasiir 🇰🇷 767 37 2ms 27 Nov 2024 356th didion0 🇺🇸 767 84 10ms 10 Jan 2025 357th jatloe 767 104 10ms 1 Oct 2024 358th MeWhenI 🇻🇦 765 109 372ms 2 Oct 2024 359th ovs-code 🇩🇪 764 122 157ms 25 Apr 2025 360th albanian-laundromat 763 118 84ms 13 Nov 2025 361st Shanethegamer 🇺🇸 763 124 6ms 4 Oct 2024 362nd GolfingSuccess 🇬🇷 762 70 6ms 6 Jun 2025 363rd MeWhenI 🇻🇦 761 89 6ms 2 Oct 2024 364th emgordon154 760 63 35ms 18 Nov 2024 364th SirBogman 🇺🇸 760 63 33ms 19 Jul 2025 366th DialFrost 🇸🇬 759 76 1,013ms 30 Aug 2025 367th sean-niemann 🇺🇸 759 93 1ms 24 Oct 2024 368th fourth-bit 759 105 17ms 1 Oct 2024 368th jared-hughes 759 105 16ms 3 Oct 2024 368th mattyhempstead 759 105 26ms 7 Oct 2024 371st weliveinhell 🇭🇹 758 85 10ms 1 Oct 2024 371st SteRoy 758 85 11ms 13 May 2025 373rd CLOStrophobic 🇮🇹 758 160 40ms 27 Feb 2025 374th MeWhenI 🇻🇦 754 88 440ms 2 Oct 2024 374th albanian-laundromat 754 88 462ms 3 Nov 2025 376th 0xjac 🇨🇭 754 158 287ms 17 Jun 2025 377th GrayJoKing 🇦🇺 753 90 5ms 1 Oct 2024 378th davecame 752 106 17ms 1 Oct 2024 378th starfihs 752 106 10ms 2 Oct 2024 378th rschwa6308 🇺🇸 752 106 16ms 28 Oct 2024 378th snydej 752 106 17ms 21 Nov 2024 378th andrewjc2000 752 106 17ms 17 Jul 2025 378th qpwoeirut 752 106 10ms 19 Aug 2025 378th KatieLG 🇬🇧 752 106 17ms 14 days ago 385th stefangimmillaro 751 94 1ms 30 Oct 2024 385th emgordon154 751 94 2ms 17 days ago 387th stackofbears 750 52 34ms 14 Mar 2025 388th MeWhenI 🇻🇦 750 89 2,127ms 24 Oct 2024 389th Maznek 749 86 10ms 4 Oct 2024 390th sean-niemann 🇺🇸 749 116 448ms 24 Oct 2024 390th luuumine 🇫🇷 749 116 431ms 15 Dec 2025 392nd MeWhenI 🇻🇦 749 162 26ms 2 Oct 2024 393rd Shanethegamer 🇺🇸 748 64 35ms 3 Oct 2024 393rd Andriamanitra 🇫🇮 748 64 36ms 5 Oct 2024 395th MeWhenI 🇻🇦 748 106 1ms 2 Oct 2024 396th rak1507 🇬🇧 747 38 2ms 30 Dec 2024 397th sean-niemann 🇺🇸 747 93 111ms 24 Oct 2024 398th commandz0 🇺🇸 745 107 17ms 7 Oct 2024 398th zbreit 🇺🇸 745 107 16ms 29 Oct 2024 398th StardustGogeta 745 107 17ms 30 Oct 2024 First Prev 321–400 of 902 Next Last