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 265ms 3 Oct 2024 301st targrik 784 152 267ms 7 Jul 2025 303rd stefangimmillaro 783 61 36ms 1 Oct 2024 304th Shanethegamer 🇺🇸 782 91 358ms 3 Oct 2024 305th annaproxy 781 102 17ms 1 Oct 2024 305th snoozingnewt 🇨🇦 781 102 10ms 9 mins ago 307th SirBogman 🇺🇸 780 50 36ms 8 Jul 2025 308th MeWhenI 🇻🇦 780 122 55ms 5 Oct 2024 309th GrayJoKing 🇦🇺 779 82 121ms 1 Oct 2024 310th sean-niemann 🇺🇸 779 107 331ms 3 Oct 2024 311th adriweb 🇫🇷 777 102 2ms 5 Oct 2024 312th Shanethegamer 🇺🇸 777 120 332ms 24 Sep 2025 313th emgordon154 777 166 1,640ms 2 Oct 2024 314th m-tkach 🇺🇦 776 131 3ms 4 Oct 2024 315th uttumuttu 🇫🇮 775 83 10ms 1 Oct 2024 315th KatieLG 🇬🇧 775 83 9ms 1 Oct 2024 315th Larento 775 83 9ms 4 Nov 2024 315th Andrey-Plotnikov 775 83 9ms 13 Jan 2025 315th nathanadams 🇳🇿 775 83 9ms 6 Oct 2025 320th duckyluuk 🇳🇱 775 97 9ms 11 days ago 321st DialFrost 🇸🇬 773 76 717ms 30 Aug 2025 322nd Natanaelel 🇸🇪 772 143 184ms 20 Apr 2025 323rd sean-niemann 🇺🇸 771 105 440ms 1 Oct 2024 324th DialFrost 🇸🇬 771 121 322ms 24 Sep 2025 325th sisyphus-ppcg 🇦🇺 770 62 39ms 3 Oct 2024 326th emgordon154 770 83 129ms 18 Nov 2024 327th Waffle3z 770 103 1ms 2 Oct 2024 328th retrohun 769 63 20ms 2 Oct 2024 329th DialFrost 🇸🇬 769 90 2ms 17 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 10ms 1 Oct 2024 333rd solisolu 766 104 11ms 21 days ago 335th DialFrost 🇸🇬 766 131 6ms 11 Dec 2024 336th MeWhenI 🇻🇦 765 109 331ms 2 Oct 2024 336th edsrzf 🇳🇿 765 109 377ms 23 Jul 2025 338th luuumine 🇫🇷 764 92 2ms 24 hours ago 339th ovs-code 🇩🇪 764 122 152ms 25 Apr 2025 340th albanian-laundromat 763 118 77ms 23 days ago 341st Shanethegamer 🇺🇸 763 124 6ms 4 Oct 2024 342nd GolfingSuccess 🇬🇷 762 70 6ms 6 Jun 2025 343rd GrayJoKing 🇦🇺 761 79 1,080ms 1 Oct 2024 344th Shanethegamer 🇺🇸 761 132 8ms 2 Oct 2024 345th MeWhenI 🇻🇦 759 89 5ms 2 Oct 2024 346th fourth-bit 759 105 16ms 1 Oct 2024 346th jared-hughes 759 105 17ms 3 Oct 2024 346th mattyhempstead 759 105 27ms 7 Oct 2024 349th emgordon154 758 63 40ms 18 Nov 2024 349th SirBogman 🇺🇸 758 63 41ms 19 Jul 2025 351st weliveinhell 🇭🇹 757 85 9ms 1 Oct 2024 351st SteRoy 757 85 10ms 13 May 2025 353rd sean-niemann 🇺🇸 756 93 2ms 24 Oct 2024 354th 0xjac 🇨🇭 754 158 269ms 17 Jun 2025 355th MeWhenI 🇻🇦 753 88 561ms 2 Oct 2024 355th albanian-laundromat 753 88 493ms 3 Nov 2025 357th GrayJoKing 🇦🇺 751 90 4ms 1 Oct 2024 358th davecame 751 106 16ms 1 Oct 2024 358th starfihs 751 106 10ms 2 Oct 2024 358th rschwa6308 🇺🇸 751 106 16ms 28 Oct 2024 358th snydej 751 106 17ms 21 Nov 2024 358th andrewjc2000 751 106 15ms 17 Jul 2025 358th qpwoeirut 751 106 10ms 19 Aug 2025 364th stackofbears 750 52 38ms 14 Mar 2025 365th MeWhenI 🇻🇦 749 162 27ms 2 Oct 2024 366th Maznek 748 86 10ms 4 Oct 2024 367th stefangimmillaro 748 94 2ms 30 Oct 2024 368th MeWhenI 🇻🇦 748 106 1ms 2 Oct 2024 369th rak1507 🇬🇧 747 38 3ms 30 Dec 2024 370th Shanethegamer 🇺🇸 746 64 44ms 3 Oct 2024 370th Andriamanitra 🇫🇮 746 64 38ms 5 Oct 2024 372nd MeWhenI 🇻🇦 746 89 2,930ms 24 Oct 2024 373rd commandblockguy 🇺🇸 744 107 16ms 7 Oct 2024 373rd zbreit 🇺🇸 744 107 18ms 29 Oct 2024 373rd StardustGogeta 744 107 16ms 30 Oct 2024 First Prev 301–375 of 838 Next Last