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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 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 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 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 Calendar 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 Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Tower of Hanoi 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 Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight 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 Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight 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 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 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 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 Calendar 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 Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Tower of Hanoi Turtle Tutorial # Golfer Points Chars Time Submitted 151st primo-ppcg 🇹🇭 846 128 43ms 27 Apr 2025 152nd duckyluuk 🇳🇱 845 68 447ms 4 Oct 2024 153rd error256 844 94 2ms 7 Oct 2024 154th IanUtley 844 113 29ms 2 Oct 2024 155th CLOStrophobic 🇮🇹 844 119 7ms 24 Feb 2025 156th KasperKivimaeki 🇫🇮 844 141 259ms 9 Oct 2025 157th lynn 843 131 168ms 8 Jan 2025 158th sean-niemann 🇺🇸 840 121 2ms 30 Nov 2024 159th jatloe 839 77 10ms 1 Oct 2024 160th xsot 🇸🇬 838 57 43ms 6 May 2025 161st Shanethegamer 🇺🇸 838 67 259ms 3 Oct 2024 161st antimon2 🇯🇵 838 67 443ms 9 Oct 2024 163rd emplv 🇱🇻 838 142 261ms 2 Oct 2024 163rd sean-niemann 🇺🇸 838 142 252ms 2 Oct 2024 165th nwellnhof 🇩🇪 837 84 2ms 2 Oct 2024 165th ovs-code 🇩🇪 837 84 2ms 2 Nov 2024 165th inventshah 837 84 2ms 31 Mar 2025 168th JayXon 🇺🇸 837 109 1,354ms 5 Oct 2024 169th stefangimmillaro 836 68 1,045ms 2 Oct 2024 170th GrayJoKing 🇦🇺 835 47 4ms 1 Oct 2024 171st Shanethegamer 🇺🇸 835 77 10ms 1 Oct 2024 171st edsrzf 🇳🇿 835 77 8ms 10 May 2025 171st biocommando 🇫🇮 835 77 9ms 13 Jun 2025 174th sean-niemann 🇺🇸 835 114 44ms 2 Oct 2024 175th m-tkach 🇺🇦 835 144 84ms 8 Oct 2024 176th sean-niemann 🇺🇸 834 81 9ms 20 Dec 2024 177th emgordon154 833 69 391ms 18 Nov 2024 178th edsrzf 🇳🇿 833 108 75ms 26 Jul 2025 179th stefangimmillaro 833 112 146ms 4 Oct 2024 180th MeWhenI 🇻🇦 833 130 61ms 3 Oct 2024 181st ovs-code 🇩🇪 833 200 447ms 19 Apr 2025 182nd edsrzf 🇳🇿 832 96 93ms 14 hours ago 183rd MeWhenI 🇻🇦 832 143 259ms 2 Oct 2024 184th JayXon 🇺🇸 832 155 1,692ms 3 Oct 2024 185th stefangimmillaro 830 80 2,185ms 12 Nov 2024 186th emplv 🇱🇻 829 145 41ms 24 Oct 2024 187th qpwoeirut 828 78 14ms 1 Oct 2025 188th saito-ta 🇯🇵 827 85 2ms 1 Oct 2024 189th m-tkach 🇺🇦 827 138 29ms 3 Oct 2024 190th dcgjb 825 78 9ms 6 May 2025 191st stefangimmillaro 825 99 109ms 3 Oct 2024 192nd retrohun 824 71 9ms 10 Jan 2025 193rd m-tkach 🇺🇦 823 58 37ms 8 Oct 2024 194th Kacarott 🇦🇺 823 73 986ms 1 Oct 2024 194th chunes3 🇺🇸 823 73 1,046ms 2 Oct 2024 196th ovs-code 🇩🇪 823 78 97ms 2 Oct 2024 197th primo-ppcg 🇹🇭 822 232 506ms 13 Aug 2025 198th albanian-laundromat 821 70 354ms 25 days ago 199th edsrzf 🇳🇿 821 118 4ms 27 Jul 2025 200th ovs-code 🇩🇪 820 65 6ms 30 Oct 2024 201st kg583 🇺🇸 820 142 41ms 14 Feb 2025 202nd sean-niemann 🇺🇸 818 48 5ms 9 Aug 2025 203rd JohandeRuiter 🇳🇱 818 86 1ms 17 Jan 2025 204th MeWhenI 🇻🇦 818 114 342ms 20 days ago 205th MeWhenI 🇻🇦 818 183 15ms 2 Oct 2024 206th MeWhenI 🇻🇦 817 92 10ms 24 Dec 2024 207th MeWhenI 🇻🇦 817 104 19ms 2 Oct 2024 208th canissimia 🇦🇶 817 130 4ms 4 Oct 2024 209th rucin93 🇵🇱 816 71 128ms 17 Dec 2024 210th lifthrasiir 🇰🇷 815 197 10ms 19 Dec 2024 211th sisyphus-ppcg 🇦🇺 814 83 9ms 2 Oct 2024 212th MeWhenI 🇻🇦 814 85 2ms 5 Oct 2024 213th MeWhenI 🇻🇦 813 85 104ms 4 Oct 2024 214th emgordon154 813 205 421ms 7 Mar 2025 215th Shanethegamer 🇺🇸 812 70 986ms 9 Apr 2025 216th sean-niemann 🇺🇸 811 115 335ms 24 Sep 2025 216th stefangimmillaro 811 115 329ms 6 Oct 2025 218th lifthrasiir 🇰🇷 810 71 340ms 2 Dec 2024 219th ovs-code 🇩🇪 810 106 385ms 1 Oct 2024 219th inventshah 810 106 381ms 1 Oct 2024 221st kg583 🇺🇸 810 124 7ms 20 Oct 2024 221st AlephSquirrel 810 124 7ms 21 Oct 2024 223rd anter69 🇭🇺 809 59 69ms 11 Oct 2024 223rd Natanaelel 🇸🇪 809 59 36ms 7 Feb 2025 225th stefangimmillaro 808 134 56ms 3 Oct 2024 First Prev 151–225 of 829 Next Last