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 241st edsrzf 🇳🇿 820 148 47ms 46 hours ago 242nd MeWhenI 🇻🇦 819 114 470ms 7 Nov 2025 243rd frosster 🇨🇦 818 97 2ms 11 days ago 244th MeWhenI 🇻🇦 817 85 127ms 4 Oct 2024 245th MeWhenI 🇻🇦 817 92 10ms 24 Dec 2024 246th MeWhenI 🇻🇦 817 104 1,025ms 2 Oct 2024 247th canissimia 🇦🇶 817 130 3ms 4 Oct 2024 248th MeWhenI 🇻🇦 817 186 14ms 2 Oct 2024 249th sisyphus-ppcg 🇦🇺 816 83 10ms 2 Oct 2024 250th MeWhenI 🇻🇦 816 85 2ms 5 Oct 2024 251st CLOStrophobic 🇮🇹 815 119 6ms 24 Feb 2025 252nd lifthrasiir 🇰🇷 815 197 9ms 19 Dec 2024 253rd Shanethegamer 🇺🇸 814 69 324ms 2 Oct 2024 254th GolfingSuccess 🇬🇷 813 98 17ms 5 Oct 2024 254th albanian-laundromat 813 98 17ms 3 Nov 2025 256th albanian-laundromat 813 118 4ms 11 Dec 2025 257th emgordon154 813 205 1,404ms 7 Mar 2025 258th Shanethegamer 🇺🇸 812 70 1,296ms 9 Apr 2025 259th sean-niemann 🇺🇸 812 115 361ms 24 Sep 2025 259th stefangimmillaro 812 115 671ms 6 Oct 2025 261st Natanaelel 🇸🇪 811 59 35ms 7 Feb 2025 262nd stefangimmillaro 810 126 2ms 3 Oct 2024 263rd sean-niemann 🇺🇸 809 82 393ms 23 Dec 2024 264th stefangimmillaro 808 134 41ms 3 Oct 2024 265th GolfingSuccess 🇬🇷 806 31 72ms 5 Oct 2024 266th trinityy-7 805 80 10ms 23 Jul 2025 267th SirBogman 🇺🇸 805 99 16ms 8 Oct 2024 268th error256 805 116 494ms 24 Sep 2025 269th albanian-laundromat 805 148 281ms 3 Dec 2025 270th MeWhenI 🇻🇦 804 127 2ms 5 Oct 2024 270th albanian-laundromat 804 127 3ms 3 Nov 2025 272nd GrayJoKing 🇦🇺 803 58 6ms 24 Oct 2024 273rd MeWhenI 🇻🇦 803 88 1ms 2 Oct 2024 274th Shanethegamer 🇺🇸 803 138 142ms 3 Oct 2024 275th antimon2 🇯🇵 802 70 531ms 9 Oct 2024 276th stefangimmillaro 802 89 453ms 4 Oct 2024 277th DialFrost 🇸🇬 802 106 24ms 23 Mar 2025 278th ovs-code 🇩🇪 802 119 16ms 1 Oct 2024 279th albanian-laundromat 802 120 42ms 3 Nov 2025 280th edsrzf 🇳🇿 801 104 380ms 20 hours ago 281st Shanethegamer 🇺🇸 801 208 1,404ms 14 Apr 2025 281st DialFrost 🇸🇬 801 208 1,411ms 18 Apr 2025 283rd duckyluuk 🇳🇱 799 83 458ms 3 Oct 2024 283rd emgordon154 799 83 434ms 18 Nov 2024 285th sean-niemann 🇺🇸 799 92 116ms 1 Oct 2025 286th stefangimmillaro 798 87 113ms 4 Oct 2024 287th DialFrost 🇸🇬 797 85 7ms 1 Oct 2024 287th xsot 🇸🇬 797 85 5ms 7 Oct 2024 289th anter69 🇭🇺 797 100 17ms 1 Oct 2024 289th bzijlema 🇳🇱 797 100 18ms 10 Oct 2024 289th bricknellj 797 100 17ms 4 Mar 2025 292nd MeWhenI 🇻🇦 797 109 389ms 2 Oct 2024 293rd Shanethegamer 🇺🇸 797 128 2ms 3 Oct 2024 294th 2bular 796 49 31ms 8 Nov 2025 295th m-tkach 🇺🇦 796 138 29ms 3 Oct 2024 296th tayloia 🇬🇧 795 81 11ms 3 Oct 2024 296th targrik 795 81 9ms 8 Feb 2025 296th Lv0Sys 🇵🇱 795 81 10ms 10 Dec 2025 299th DialFrost 🇸🇬 794 84 2,408ms 26 Oct 2024 300th Shanethegamer 🇺🇸 794 102 451ms 4 Oct 2024 301st MeWhenI 🇻🇦 793 90 438ms 2 Oct 2024 302nd Natanaelel 🇸🇪 791 48 118ms 1 Oct 2024 303rd jared-hughes 791 203 88ms 20 Dec 2024 304th saito-ta 🇯🇵 790 74 7ms 1 Oct 2024 305th ovs-code 🇩🇪 790 84 458ms 3 Oct 2024 305th Shanethegamer 🇺🇸 790 84 451ms 3 Oct 2024 307th pardouin 🇫🇷 789 81 139ms 29 Jan 2025 307th ovs-code 🇩🇪 789 81 126ms 17 Apr 2025 309th Shanethegamer 🇺🇸 789 88 113ms 4 Oct 2024 310th lifthrasiir 🇰🇷 789 101 16ms 21 Nov 2024 310th btjones0 789 101 17ms 2 Dec 2024 312th MeWhenI 🇻🇦 789 122 39ms 5 Oct 2024 313th emgordon154 789 151 286ms 17 Jan 2025 314th emgordon154 787 164 1,815ms 22 Dec 2025 315th KingSkyrock 🇺🇸 785 82 10ms 14 Oct 2024 316th namelessiw 785 119 565ms 9 Oct 2025 317th SirBogman 🇺🇸 785 138 39ms 11 Jul 2025 318th stefangimmillaro 784 61 35ms 1 Oct 2024 319th Shanethegamer 🇺🇸 784 91 455ms 3 Oct 2024 320th edsrzf 🇳🇿 784 119 153ms 23 Jul 2025 First Prev 241–320 of 899 Next Last