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 Continued Fractions 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 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four 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 Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript 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 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 ArkScript 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 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 Continued Fractions 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 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four 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 Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 241st plcc0 822 97 17ms 12 Jan 2026 242nd primo-ppcg 🇹🇭 822 232 525ms 13 Aug 2025 243rd sean-niemann 🇺🇸 820 48 4ms 9 Aug 2025 244th ovs-code 🇩🇪 820 65 5ms 30 Oct 2024 245th ovs-code 🇩🇪 820 106 453ms 1 Oct 2024 245th inventshah 820 106 463ms 1 Oct 2024 247th MeWhenI 🇻🇦 819 114 470ms 7 Nov 2025 248th frosster 🇨🇦 818 97 2ms 11 Feb 2026 249th GrayJoKing 🇦🇺 818 101 6ms 22 days ago 250th MeWhenI 🇻🇦 817 85 114ms 4 Oct 2024 251st MeWhenI 🇻🇦 817 104 1,025ms 2 Oct 2024 252nd canissimia 🇦🇶 817 130 3ms 4 Oct 2024 253rd MeWhenI 🇻🇦 817 186 16ms 2 Oct 2024 254th Shanethegamer 🇺🇸 816 69 324ms 2 Oct 2024 255th sisyphus-ppcg 🇦🇺 816 83 8ms 2 Oct 2024 256th MeWhenI 🇻🇦 816 85 2ms 5 Oct 2024 257th lifthrasiir 🇰🇷 815 197 9ms 19 Dec 2024 258th GolfingSuccess 🇬🇷 814 98 17ms 5 Oct 2024 258th albanian-laundromat 814 98 17ms 3 Nov 2025 260th albanian-laundromat 813 118 4ms 11 Dec 2025 261st emgordon154 813 205 1,417ms 7 Mar 2025 262nd Shanethegamer 🇺🇸 812 70 1,296ms 9 Apr 2025 263rd sean-niemann 🇺🇸 812 115 361ms 24 Sep 2025 263rd stefangimmillaro 812 115 671ms 6 Oct 2025 265th Natanaelel 🇸🇪 811 59 35ms 7 Feb 2025 266th edsrzf 🇳🇿 811 149 76ms 6 hours ago 267th stefangimmillaro 810 126 2ms 3 Oct 2024 268th sean-niemann 🇺🇸 809 82 393ms 23 Dec 2024 269th CLOStrophobic 🇮🇹 808 119 6ms 24 Feb 2025 270th stefangimmillaro 808 134 41ms 3 Oct 2024 271st GolfingSuccess 🇬🇷 806 31 69ms 5 Oct 2024 272nd trinityy-7 806 80 10ms 23 Jul 2025 273rd SirBogman 🇺🇸 805 99 16ms 8 Oct 2024 273rd solisolu 805 99 17ms 8 days ago 275th error256 805 116 494ms 24 Sep 2025 276th albanian-laundromat 805 148 279ms 3 Dec 2025 277th antimon2 🇯🇵 804 70 531ms 9 Oct 2024 278th MeWhenI 🇻🇦 804 127 2ms 5 Oct 2024 278th albanian-laundromat 804 127 3ms 3 Nov 2025 280th GrayJoKing 🇦🇺 803 58 6ms 24 Oct 2024 281st MeWhenI 🇻🇦 803 88 1ms 2 Oct 2024 282nd Shanethegamer 🇺🇸 803 138 142ms 3 Oct 2024 283rd stefangimmillaro 802 89 418ms 4 Oct 2024 284th DialFrost 🇸🇬 802 106 24ms 23 Mar 2025 285th ovs-code 🇩🇪 802 119 15ms 1 Oct 2024 286th albanian-laundromat 802 120 42ms 3 Nov 2025 287th edsrzf 🇳🇿 801 104 437ms 21 Feb 2026 288th Shanethegamer 🇺🇸 801 208 1,416ms 14 Apr 2025 288th DialFrost 🇸🇬 801 208 1,446ms 18 Apr 2025 290th anter69 🇭🇺 800 71 1,213ms 23 days ago 291st duckyluuk 🇳🇱 799 83 458ms 3 Oct 2024 291st emgordon154 799 83 434ms 18 Nov 2024 293rd sean-niemann 🇺🇸 799 92 161ms 1 Oct 2025 294th stefangimmillaro 798 87 111ms 4 Oct 2024 295th DialFrost 🇸🇬 797 85 8ms 1 Oct 2024 295th xsot 🇸🇬 797 85 5ms 7 Oct 2024 297th bzijlema 🇳🇱 797 100 18ms 10 Oct 2024 297th bricknellj 797 100 17ms 4 Mar 2025 299th MeWhenI 🇻🇦 797 109 459ms 2 Oct 2024 300th Shanethegamer 🇺🇸 797 128 2ms 3 Oct 2024 301st 2bular 796 49 31ms 8 Nov 2025 302nd tayloia 🇬🇧 796 81 10ms 3 Oct 2024 302nd targrik 796 81 11ms 8 Feb 2025 304th m-tkach 🇺🇦 796 138 29ms 3 Oct 2024 305th DialFrost 🇸🇬 794 84 2,655ms 26 Oct 2024 306th Shanethegamer 🇺🇸 794 102 451ms 4 Oct 2024 307th MeWhenI 🇻🇦 793 90 421ms 2 Oct 2024 308th Natanaelel 🇸🇪 791 48 129ms 1 Oct 2024 309th jared-hughes 791 203 88ms 20 Dec 2024 310th saito-ta 🇯🇵 790 74 7ms 1 Oct 2024 311th ovs-code 🇩🇪 790 84 458ms 3 Oct 2024 311th Shanethegamer 🇺🇸 790 84 451ms 3 Oct 2024 313th pardouin 🇫🇷 789 81 139ms 29 Jan 2025 313th ovs-code 🇩🇪 789 81 144ms 17 Apr 2025 315th Shanethegamer 🇺🇸 789 88 122ms 4 Oct 2024 316th lifthrasiir 🇰🇷 789 101 16ms 21 Nov 2024 316th btjones0 789 101 17ms 2 Dec 2024 318th MeWhenI 🇻🇦 789 122 39ms 5 Oct 2024 319th emgordon154 789 151 288ms 17 Jan 2025 320th emgordon154 787 164 1,815ms 22 Dec 2025 First Prev 241–320 of 912 Next Last