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 Lily 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 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 sisyphus-ppcg 🇦🇺 816 83 10ms 2 Oct 2024 242nd CLOStrophobic 🇮🇹 815 119 6ms 24 Feb 2025 243rd lifthrasiir 🇰🇷 815 197 9ms 19 Dec 2024 244th Shanethegamer 🇺🇸 814 69 324ms 2 Oct 2024 245th MeWhenI 🇻🇦 814 85 2ms 5 Oct 2024 246th MeWhenI 🇻🇦 813 85 127ms 4 Oct 2024 247th GolfingSuccess 🇬🇷 813 98 17ms 5 Oct 2024 247th albanian-laundromat 813 98 17ms 3 Nov 2025 249th albanian-laundromat 813 118 4ms 11 Dec 2025 250th emgordon154 813 205 1,404ms 7 Mar 2025 251st Shanethegamer 🇺🇸 812 70 1,296ms 9 Apr 2025 252nd sean-niemann 🇺🇸 812 115 361ms 24 Sep 2025 252nd stefangimmillaro 812 115 671ms 6 Oct 2025 254th Natanaelel 🇸🇪 811 59 35ms 7 Feb 2025 255th sean-niemann 🇺🇸 808 82 478ms 23 Dec 2024 256th stefangimmillaro 808 134 41ms 3 Oct 2024 257th stefangimmillaro 807 126 2ms 3 Oct 2024 258th GolfingSuccess 🇬🇷 806 31 72ms 5 Oct 2024 259th trinityy-7 805 80 10ms 23 Jul 2025 260th SirBogman 🇺🇸 805 99 16ms 8 Oct 2024 261st error256 805 116 494ms 24 Sep 2025 262nd albanian-laundromat 805 148 281ms 3 Dec 2025 263rd GrayJoKing 🇦🇺 803 58 6ms 24 Oct 2024 264th MeWhenI 🇻🇦 803 88 1ms 2 Oct 2024 265th Shanethegamer 🇺🇸 803 138 142ms 3 Oct 2024 266th antimon2 🇯🇵 802 70 531ms 9 Oct 2024 267th stefangimmillaro 802 89 453ms 4 Oct 2024 268th DialFrost 🇸🇬 802 106 24ms 23 Mar 2025 269th ovs-code 🇩🇪 802 119 16ms 1 Oct 2024 270th albanian-laundromat 802 120 42ms 3 Nov 2025 271st MeWhenI 🇻🇦 801 127 2ms 5 Oct 2024 271st albanian-laundromat 801 127 3ms 3 Nov 2025 273rd Shanethegamer 🇺🇸 801 208 1,404ms 14 Apr 2025 273rd DialFrost 🇸🇬 801 208 1,411ms 18 Apr 2025 275th sean-niemann 🇺🇸 799 92 116ms 1 Oct 2025 276th duckyluuk 🇳🇱 798 83 458ms 3 Oct 2024 276th emgordon154 798 83 434ms 18 Nov 2024 278th DialFrost 🇸🇬 797 85 7ms 1 Oct 2024 278th xsot 🇸🇬 797 85 5ms 7 Oct 2024 280th anter69 🇭🇺 797 100 17ms 1 Oct 2024 280th bzijlema 🇳🇱 797 100 18ms 10 Oct 2024 280th bricknellj 797 100 17ms 4 Mar 2025 283rd MeWhenI 🇻🇦 797 109 389ms 2 Oct 2024 284th 2bular 796 49 31ms 8 Nov 2025 285th m-tkach 🇺🇦 796 138 29ms 3 Oct 2024 286th tayloia 🇬🇧 795 81 11ms 3 Oct 2024 286th targrik 795 81 9ms 8 Feb 2025 286th Lv0Sys 🇵🇱 795 81 10ms 10 Dec 2025 289th DialFrost 🇸🇬 794 84 2,408ms 26 Oct 2024 290th stefangimmillaro 794 87 113ms 4 Oct 2024 291st Shanethegamer 🇺🇸 794 102 451ms 4 Oct 2024 292nd Shanethegamer 🇺🇸 794 128 2ms 3 Oct 2024 293rd MeWhenI 🇻🇦 793 90 438ms 2 Oct 2024 294th Natanaelel 🇸🇪 791 48 118ms 1 Oct 2024 295th jared-hughes 791 203 88ms 20 Dec 2024 296th saito-ta 🇯🇵 790 74 7ms 1 Oct 2024 297th pardouin 🇫🇷 789 81 139ms 29 Jan 2025 297th ovs-code 🇩🇪 789 81 126ms 17 Apr 2025 299th ovs-code 🇩🇪 789 84 458ms 3 Oct 2024 299th Shanethegamer 🇺🇸 789 84 451ms 3 Oct 2024 301st lifthrasiir 🇰🇷 789 101 16ms 21 Nov 2024 301st btjones0 789 101 17ms 2 Dec 2024 303rd MeWhenI 🇻🇦 789 122 39ms 5 Oct 2024 304th emgordon154 789 151 286ms 17 Jan 2025 305th emgordon154 787 164 1,815ms 22 Dec 2025 306th KingSkyrock 🇺🇸 785 82 10ms 14 Oct 2024 307th Shanethegamer 🇺🇸 785 88 113ms 4 Oct 2024 308th namelessiw 785 119 565ms 9 Oct 2025 309th SirBogman 🇺🇸 785 138 39ms 11 Jul 2025 310th stefangimmillaro 784 61 35ms 1 Oct 2024 311th Shanethegamer 🇺🇸 784 91 455ms 3 Oct 2024 312th edsrzf 🇳🇿 784 119 153ms 23 Jul 2025 313th Shanethegamer 🇺🇸 784 152 281ms 3 Oct 2024 313th targrik 784 152 283ms 7 Jul 2025 315th AlephSquirrel 783 124 7ms 21 Oct 2024 316th annaproxy 782 102 17ms 1 Oct 2024 316th snoozingnewt 🇨🇦 782 102 9ms 6 Dec 2025 316th solisolu 782 102 10ms 31 Dec 2025 316th Flekay 🇩🇪 782 102 18ms 34 hours ago 320th SirBogman 🇺🇸 780 50 32ms 8 Jul 2025 First Prev 241–320 of 891 Next Last