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Card Number Validation in all languages in chars. 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 Chars Time Submitted 81st canissimia 🇦🇶 893 28 41ms 2 Oct 2024 82nd error256 893 60 1,103ms 26 days ago 83rd nwellnhof 🇩🇪 892 80 459ms 2 Oct 2024 83rd Yax42 🇫🇷 892 80 464ms 7 Feb 2025 85th ovs-code 🇩🇪 891 63 524ms 1 Oct 2024 86th rucin93 🇵🇱 890 78 2ms 18 Nov 2025 86th JayXon 🇺🇸 890 78 2ms 19 Nov 2025 86th sean-niemann 🇺🇸 890 78 2ms 19 Nov 2025 86th edsrzf 🇳🇿 890 78 2ms 7 days ago 86th Steffan153 🇫🇮 890 78 2ms 7 days ago 91st GrayJoKing 🇦🇺 889 60 4ms 3 Oct 2024 92nd nwellnhof 🇩🇪 889 105 627ms 25 Sep 2025 93rd JayXon 🇺🇸 889 134 289ms 3 Oct 2024 94th MeWhenI 🇻🇦 888 64 1,305ms 3 Oct 2024 95th kgolf 887 32 3ms 15 Apr 2025 96th MeWhenI 🇻🇦 886 54 35ms 3 Oct 2024 96th error256 886 54 36ms 7 Oct 2024 96th nwellnhof 🇩🇪 886 54 37ms 13 Oct 2024 96th sean-niemann 🇺🇸 886 54 37ms 12 Oct 2025 100th canissimia 🇦🇶 886 66 8ms 1 Oct 2024 101st moustave 885 73 22ms 5 Nov 2024 101st emgordon154 885 73 18ms 18 Nov 2024 103rd nwellnhof 🇩🇪 883 135 290ms 16 Oct 2024 103rd edsrzf 🇳🇿 883 135 272ms 7 days ago 105th dmrichwa 🇺🇸 882 73 10ms 5 Oct 2024 105th DialFrost 🇸🇬 882 73 12ms 12 Oct 2024 107th GrayJoKing 🇦🇺 881 90 2ms 3 Oct 2024 107th FlyingPenguin223 881 90 2ms 16 Oct 2024 109th acotis 880 106 144ms 29 May 2025 110th JayXon 🇺🇸 879 79 129ms 17 Oct 2024 111th ovs-code 🇩🇪 878 69 4ms 4 Oct 2024 111th edsrzf 🇳🇿 878 69 4ms 10 Nov 2025 113th sean-niemann 🇺🇸 878 76 2,410ms 24 Oct 2024 114th JayXon 🇺🇸 878 93 110ms 14 Oct 2024 115th JayXon 🇺🇸 877 95 411ms 23 Jul 2025 116th JayXon 🇺🇸 876 84 117ms 24 May 2025 117th edsrzf 🇳🇿 876 91 8ms 16 Aug 2025 118th xsot 🇸🇬 874 66 782ms 6 days ago 119th kg583 🇺🇸 874 111 7ms 8 days ago 120th albanian-laundromat 873 74 17ms 3 Nov 2025 120th plcc0 873 74 17ms 12 Jan 2026 122nd edsrzf 🇳🇿 873 107 411ms 7 days ago 123rd ovs-code 🇩🇪 873 127 127ms 2 Oct 2024 124th sean-niemann 🇺🇸 872 66 346ms 30 Dec 2025 125th JayXon 🇺🇸 872 117 2ms 5 Oct 2024 126th KasperKivimaeki 🇫🇮 871 79 2ms 6 Dec 2025 127th Shanethegamer 🇺🇸 871 91 2ms 4 Oct 2024 128th ovs-code 🇩🇪 870 55 37ms 5 Oct 2024 128th Steffan153 🇫🇮 870 55 39ms 11 days ago 130th Natanaelel 🇸🇪 870 74 11ms 1 Oct 2024 130th helbling 🇨🇭 870 74 9ms 1 Oct 2024 130th Irratix 🇳🇱 870 74 10ms 14 Oct 2024 130th emgordon154 870 74 9ms 18 Nov 2024 134th DialFrost 🇸🇬 868 74 105ms 17 Mar 2025 135th emgordon154 867 77 2,406ms 8 Nov 2024 136th UnderKoen 🇳🇱 865 86 7ms 4 Oct 2024 137th JayXon 🇺🇸 865 104 89ms 6 Oct 2024 138th GrayJoKing 🇦🇺 864 87 12ms 25 Nov 2025 139th ovs-code 🇩🇪 862 29 40ms 4 Oct 2024 140th pardouin 🇫🇷 861 66 1,435ms 10 Apr 2025 141st Natanaelel 🇸🇪 860 33 2ms 6 Oct 2024 141st GrayJoKing 🇦🇺 860 33 2ms 6 Jun 2025 141st SirBogman 🇺🇸 860 33 2ms 8 Jul 2025 144th nwellnhof 🇩🇪 860 68 9ms 5 Oct 2024 145th tomtheisen 🇺🇸 860 83 443ms 10 Feb 2025 146th edsrzf 🇳🇿 860 84 4ms 8 days ago 147th kg583 🇺🇸 859 67 424ms 1 Oct 2024 148th voytxt 🇨🇿 859 75 10ms 1 Oct 2024 148th MeWhenI 🇻🇦 859 75 11ms 2 Oct 2024 148th m-tkach 🇺🇦 859 75 10ms 5 Oct 2024 148th error256 859 75 10ms 7 Oct 2024 152nd edsrzf 🇳🇿 859 113 6ms 29 Jan 2026 153rd kg583 🇺🇸 857 93 8ms 8 days ago 154th stefangimmillaro 857 139 282ms 3 Oct 2024 155th ovs-code 🇩🇪 856 46 4ms 4 Oct 2024 155th nwellnhof 🇩🇪 856 46 4ms 7 Oct 2024 157th edsrzf 🇳🇿 856 90 118ms 18 Dec 2025 158th m-tkach 🇺🇦 855 87 7ms 6 Oct 2024 159th sean-niemann 🇺🇸 854 68 139ms 1 Oct 2024 160th JayXon 🇺🇸 853 95 445ms 4 Oct 2024 First Prev 81–160 of 899 Next Last