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 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 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 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 Multitap Input NFA Simulator 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 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 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 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 Multitap Input NFA Simulator 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 301st Shanethegamer 🇺🇸 784 152 264ms 3 Oct 2024 301st targrik 784 152 264ms 7 Jul 2025 303rd stefangimmillaro 783 61 33ms 1 Oct 2024 304th Shanethegamer 🇺🇸 782 91 358ms 3 Oct 2024 305th annaproxy 781 102 16ms 1 Oct 2024 305th snoozingnewt 🇨🇦 781 102 9ms 2 days ago 307th SirBogman 🇺🇸 780 50 34ms 8 Jul 2025 308th MeWhenI 🇻🇦 780 122 39ms 5 Oct 2024 309th GrayJoKing 🇦🇺 779 82 127ms 1 Oct 2024 310th sean-niemann 🇺🇸 779 107 332ms 3 Oct 2024 311th adriweb 🇫🇷 777 102 2ms 5 Oct 2024 312th Shanethegamer 🇺🇸 777 120 454ms 24 Sep 2025 313th emgordon154 777 166 1,626ms 2 Oct 2024 314th DialFrost 🇸🇬 776 76 745ms 30 Aug 2025 315th m-tkach 🇺🇦 776 131 3ms 4 Oct 2024 316th uttumuttu 🇫🇮 775 83 9ms 1 Oct 2024 316th KatieLG 🇬🇧 775 83 9ms 1 Oct 2024 316th Larento 775 83 9ms 4 Nov 2024 316th Andrey-Plotnikov 775 83 9ms 13 Jan 2025 316th nathanadams 🇳🇿 775 83 9ms 6 Oct 2025 321st duckyluuk 🇳🇱 775 97 9ms 13 days ago 322nd Natanaelel 🇸🇪 772 143 148ms 20 Apr 2025 323rd sean-niemann 🇺🇸 771 105 440ms 1 Oct 2024 324th DialFrost 🇸🇬 771 121 349ms 24 Sep 2025 325th sisyphus-ppcg 🇦🇺 770 62 34ms 3 Oct 2024 326th emgordon154 770 83 127ms 18 Nov 2024 327th Waffle3z 770 103 1ms 2 Oct 2024 328th retrohun 769 63 20ms 2 Oct 2024 329th DialFrost 🇸🇬 769 90 2ms 20 days ago 330th targrik 768 88 8ms 7 Feb 2025 331st lifthrasiir 🇰🇷 767 37 2ms 27 Nov 2024 332nd didion0 🇺🇸 766 84 9ms 10 Jan 2025 333rd jatloe 766 104 9ms 1 Oct 2024 333rd solisolu 766 104 9ms 23 days ago 335th DialFrost 🇸🇬 766 131 7ms 11 Dec 2024 336th MeWhenI 🇻🇦 765 109 334ms 2 Oct 2024 336th edsrzf 🇳🇿 765 109 365ms 23 Jul 2025 338th luuumine 🇫🇷 764 92 1ms 3 days ago 338th bzd7 764 92 2ms 2 days ago 340th ovs-code 🇩🇪 764 122 200ms 25 Apr 2025 341st albanian-laundromat 763 118 77ms 26 days ago 342nd Shanethegamer 🇺🇸 763 124 6ms 4 Oct 2024 343rd GolfingSuccess 🇬🇷 762 70 6ms 6 Jun 2025 344th GrayJoKing 🇦🇺 761 79 1,080ms 1 Oct 2024 345th Shanethegamer 🇺🇸 761 132 7ms 2 Oct 2024 346th MeWhenI 🇻🇦 759 89 5ms 2 Oct 2024 347th fourth-bit 759 105 19ms 1 Oct 2024 347th jared-hughes 759 105 15ms 3 Oct 2024 347th mattyhempstead 759 105 27ms 7 Oct 2024 350th emgordon154 758 63 37ms 18 Nov 2024 350th SirBogman 🇺🇸 758 63 32ms 19 Jul 2025 352nd weliveinhell 🇭🇹 757 85 9ms 1 Oct 2024 352nd SteRoy 757 85 9ms 13 May 2025 354th sean-niemann 🇺🇸 756 93 3ms 24 Oct 2024 355th 0xjac 🇨🇭 754 158 256ms 17 Jun 2025 356th MeWhenI 🇻🇦 753 88 504ms 2 Oct 2024 356th albanian-laundromat 753 88 532ms 3 Nov 2025 358th GrayJoKing 🇦🇺 751 90 4ms 1 Oct 2024 359th davecame 751 106 15ms 1 Oct 2024 359th starfihs 751 106 10ms 2 Oct 2024 359th rschwa6308 🇺🇸 751 106 16ms 28 Oct 2024 359th snydej 751 106 15ms 21 Nov 2024 359th andrewjc2000 751 106 15ms 17 Jul 2025 359th qpwoeirut 751 106 9ms 19 Aug 2025 365th stackofbears 750 52 35ms 14 Mar 2025 366th MeWhenI 🇻🇦 749 162 26ms 2 Oct 2024 367th Maznek 748 86 10ms 4 Oct 2024 368th stefangimmillaro 748 94 1ms 30 Oct 2024 369th MeWhenI 🇻🇦 748 106 1ms 2 Oct 2024 370th rak1507 🇬🇧 747 38 2ms 30 Dec 2024 371st Shanethegamer 🇺🇸 746 64 32ms 3 Oct 2024 371st Andriamanitra 🇫🇮 746 64 32ms 5 Oct 2024 373rd MeWhenI 🇻🇦 746 89 2,716ms 24 Oct 2024 374th commandblockguy 🇺🇸 744 107 15ms 7 Oct 2024 374th zbreit 🇺🇸 744 107 16ms 29 Oct 2024 First Prev 301–375 of 841 Next Last