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 160th MeWhenI 🇻🇦 859 75 11ms 2 Oct 2024 160th m-tkach 🇺🇦 859 75 10ms 5 Oct 2024 160th error256 859 75 10ms 7 Oct 2024 164th edsrzf 🇳🇿 859 113 6ms 26 days ago 165th Bulmenisaurus 857 93 17ms 6 Oct 2024 165th lynn 857 93 16ms 8 Jan 2025 165th CornerMercury 🇬🇧 857 93 16ms 23 Nov 2025 165th KasperKivimaeki 🇫🇮 857 93 17ms 30 Nov 2025 165th blaztoma 🇱🇹 857 93 18ms 18 Dec 2025 170th stefangimmillaro 857 139 282ms 3 Oct 2024 171st ovs-code 🇩🇪 856 46 4ms 4 Oct 2024 171st nwellnhof 🇩🇪 856 46 4ms 7 Oct 2024 173rd edsrzf 🇳🇿 856 90 118ms 18 Dec 2025 174th sean-niemann 🇺🇸 855 56 36ms 8 Aug 2025 175th m-tkach 🇺🇦 855 87 7ms 6 Oct 2024 176th JayXon 🇺🇸 853 95 445ms 4 Oct 2024 177th sean-niemann 🇺🇸 852 51 2ms 2 Oct 2024 178th MostParsingVex 850 100 1,024ms 1 Oct 2024 179th error256 849 106 85ms 8 Oct 2024 180th kg583 🇺🇸 849 143 40ms 5 days ago 181st emgordon154 848 67 1,283ms 18 Nov 2024 182nd DialFrost 🇸🇬 848 94 18ms 1 Oct 2024 182nd ndren 848 94 16ms 14 Feb 2025 184th Lv0Sys 🇵🇱 847 76 10ms 2 days ago 185th primo-ppcg 🇹🇭 846 128 41ms 27 Apr 2025 186th lynn 846 131 138ms 8 Jan 2025 187th KasperKivimaeki 🇫🇮 845 141 294ms 9 Oct 2025 188th error256 844 94 2ms 7 Oct 2024 189th KasperKivimaeki 🇫🇮 844 103 474ms 8 Dec 2025 190th IanUtley 844 113 20ms 2 Oct 2024 191st sean-niemann 🇺🇸 844 114 41ms 2 Oct 2024 192nd sean-niemann 🇺🇸 844 121 2ms 30 Nov 2024 192nd edsrzf 🇳🇿 844 121 3ms 4 days ago 194th edsrzf 🇳🇿 842 99 7ms 3 days ago 195th m-tkach 🇺🇦 842 144 79ms 8 Oct 2024 196th nwellnhof 🇩🇪 841 84 2ms 2 Oct 2024 196th ovs-code 🇩🇪 841 84 1ms 2 Nov 2024 196th inventshah 841 84 2ms 31 Mar 2025 199th xsot 🇸🇬 840 57 35ms 6 May 2025 200th kg583 🇺🇸 840 86 4ms 5 days ago 201st moustave 839 95 20ms 4 Nov 2024 201st emgordon154 839 95 17ms 18 Nov 2024 203rd emplv 🇱🇻 839 142 295ms 2 Oct 2024 203rd sean-niemann 🇺🇸 839 142 302ms 2 Oct 2024 205th GrayJoKing 🇦🇺 838 47 4ms 1 Oct 2024 205th Steffan153 🇫🇮 838 47 5ms 8 days ago 207th edsrzf 🇳🇿 838 131 28ms 15 days ago 208th edsrzf 🇳🇿 837 83 102ms 3 days ago 209th snoozingnewt 🇨🇦 837 92 106ms 18 Dec 2025 210th JayXon 🇺🇸 837 109 1,368ms 5 Oct 2024 211th kg583 🇺🇸 837 113 8ms 5 days ago 212th stefangimmillaro 836 68 1,290ms 2 Oct 2024 213th Shanethegamer 🇺🇸 836 77 10ms 1 Oct 2024 213th biocommando 🇫🇮 836 77 10ms 13 Jun 2025 215th sean-niemann 🇺🇸 836 81 10ms 20 Dec 2024 215th Steffan153 🇫🇮 836 81 12ms 14 days ago 217th emplv 🇱🇻 836 145 25ms 24 Oct 2024 218th edsrzf 🇳🇿 835 115 3ms 19 Dec 2025 219th stefangimmillaro 834 80 2,338ms 12 Nov 2024 220th edsrzf 🇳🇿 833 108 82ms 26 Jul 2025 221st stefangimmillaro 833 112 140ms 4 Oct 2024 222nd MeWhenI 🇻🇦 833 130 40ms 3 Oct 2024 223rd edsrzf 🇳🇿 833 133 154ms 19 Dec 2025 224th MeWhenI 🇻🇦 833 143 304ms 2 Oct 2024 225th ovs-code 🇩🇪 833 200 1,401ms 19 Apr 2025 226th JayXon 🇺🇸 832 155 1,904ms 3 Oct 2024 227th saito-ta 🇯🇵 831 85 1ms 1 Oct 2024 228th MeWhenI 🇻🇦 831 96 17ms 30 Jul 2025 229th emplv 🇱🇻 830 77 134ms 28 Mar 2025 230th kg583 🇺🇸 829 80 384ms 5 days ago 231st nwellnhof 🇩🇪 828 105 417ms 22 Jan 2026 232nd dcgjb 826 78 10ms 6 May 2025 233rd m-tkach 🇺🇦 825 58 39ms 8 Oct 2024 234th stefangimmillaro 825 99 109ms 3 Oct 2024 235th retrohun 824 71 9ms 10 Jan 2025 236th DialFrost 🇸🇬 822 82 103ms 23 Jun 2025 237th plcc0 822 97 17ms 12 Jan 2026 238th primo-ppcg 🇹🇭 822 232 525ms 13 Aug 2025 239th sean-niemann 🇺🇸 820 48 4ms 9 Aug 2025 240th ovs-code 🇩🇪 820 65 5ms 30 Oct 2024 First Prev 161–240 of 902 Next Last