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 ><> 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 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 ><> 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 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 401st DialFrost 🇸🇬 739 76 813ms 9 Oct 2024 402nd Shanethegamer 🇺🇸 739 172 39ms 2 Oct 2024 403rd neihousaigaai 738 108 17ms 4 Oct 2024 403rd StefanHabel 🇨🇦 738 108 15ms 23 Jan 2025 403rd CaedenHarper 🇨🇦 738 108 17ms 22 Jul 2025 403rd BrunoVisnadi 🇧🇷 738 108 16ms 1 Oct 2025 407th lifthrasiir 🇰🇷 736 90 478ms 2 Dec 2024 408th stefangimmillaro 736 92 8ms 2 Oct 2024 408th Shanethegamer 🇺🇸 736 92 5ms 3 Oct 2024 410th MeWhenI 🇻🇦 736 111 116ms 2 Oct 2024 411th MeWhenI 🇻🇦 735 34 58ms 2 Oct 2024 411th emgordon154 735 34 69ms 11 Sep 2025 411th plcc0 735 34 68ms 10 days ago 414th Shanethegamer 🇺🇸 735 100 122ms 24 May 2025 415th Kacarott 🇦🇺 734 73 1,111ms 1 Oct 2024 415th chunes3 🇺🇸 734 73 1,046ms 2 Oct 2024 417th Shanethegamer 🇺🇸 733 116 1,026ms 1 Oct 2024 418th kirjavascript 732 88 10ms 15 Mar 2025 419th Shanethegamer 🇺🇸 731 101 4ms 2 Oct 2024 420th stefangimmillaro 731 114 326ms 13 Oct 2024 421st edsrzf 🇳🇿 730 52 113ms 25 days ago 422nd MeWhenI 🇻🇦 730 174 41ms 13 Feb 2025 423rd anter69 🇭🇺 729 78 1,271ms 1 Oct 2024 424th Shanethegamer 🇺🇸 729 112 99ms 3 Oct 2024 425th error256 728 98 416ms 24 days ago 426th MeWhenI 🇻🇦 726 88 131ms 2 Oct 2024 426th Shanethegamer 🇺🇸 726 88 140ms 8 Jan 2025 428th cros107 🇦🇺 725 110 18ms 1 Jan 2025 428th guilhem-roy 🇫🇷 725 110 17ms 29 May 2025 428th Lv0Sys 🇵🇱 725 110 17ms 10 Dec 2025 431st Shanethegamer 🇺🇸 724 126 1,391ms 2 Oct 2024 432nd dtbao20 🇻🇳 723 89 10ms 1 Oct 2024 432nd madeforlosers 723 89 11ms 17 Oct 2024 432nd junkondo-jp 723 89 9ms 14 Dec 2024 432nd alexsave 723 89 10ms 22 days ago 436th annaproxy 723 132 14ms 1 Oct 2024 437th MeWhenI 🇻🇦 721 179 1,697ms 7 Nov 2025 438th weeble 720 74 6ms 1 Jul 2025 439th MeWhenI 🇻🇦 720 78 322ms 2 Oct 2024 440th Shanethegamer 🇺🇸 720 96 2ms 3 Oct 2024 441st voytxt 🇨🇿 718 89 136ms 17 Apr 2025 442nd mousetail 🇳🇱 718 111 17ms 6 Oct 2024 443rd snyderek 🇺🇸 718 121 53ms 1 Oct 2024 444th anter69 🇭🇺 714 67 38ms 1 Oct 2024 445th ovs-code 🇩🇪 714 75 1,104ms 1 Oct 2024 446th SirBogman 🇺🇸 713 93 510ms 23 Jul 2025 446th snoozingnewt 🇨🇦 713 93 469ms 6 Dec 2025 448th rzv-me 713 95 6ms 5 Oct 2024 449th h3ra993huskp 🇯🇵 713 131 422ms 30 Nov 2025 450th OllieBoyne 🇬🇧 712 112 17ms 17 Oct 2024 450th WillConker 712 112 12ms 22 Oct 2024 450th maxgodfrey2004 🇨🇦 712 112 10ms 4 Jan 2025 450th Babafaba 712 112 17ms 11 Nov 2025 454th Natanaelel 🇸🇪 709 55 34ms 1 Mar 2025 455th snoozingnewt 🇨🇦 709 95 79ms 23 Oct 2025 456th DialFrost 🇸🇬 709 106 12ms 13 Dec 2024 457th DialFrost 🇸🇬 707 132 214ms 8 Apr 2025 458th Alex-x90 🇺🇸 706 100 2ms 1 Oct 2024 459th Shanethegamer 🇺🇸 706 118 357ms 2 Oct 2024 460th BlankSpruce 706 123 408ms 1 Oct 2024 461st cbrt-x 706 157 139ms 1 Oct 2024 462nd edsrzf 🇳🇿 705 76 1,005ms 1 Oct 2024 463rd SB-945 705 113 18ms 1 Oct 2024 463rd Artemis21 🇬🇧 705 113 17ms 23 Jan 2025 463rd fkantelberg 705 113 10ms 11 Jul 2025 466th MeWhenI 🇻🇦 704 115 435ms 5 Oct 2024 467th Shanethegamer 🇺🇸 704 156 30ms 2 Oct 2024 468th janlelis 703 68 41ms 1 Oct 2024 469th emgordon154 702 76 5ms 7 Jun 2025 470th Alex-x90 🇺🇸 701 124 406ms 1 Oct 2024 470th Herbert00709 🇵🇱 701 124 56ms 14 Jun 2025 472nd mousetail 🇳🇱 701 133 153ms 3 Oct 2024 473rd LukeBridges 🇬🇧 700 92 10ms 3 Oct 2024 474th HumanoidCPU 699 114 65ms 7 Mar 2025 475th tobeannouncd 697 159 146ms 13 Dec 2024 476th emgordon154 696 134 214ms 25 Feb 2025 477th Shanethegamer 🇺🇸 693 41 3ms 4 Oct 2024 478th jipsong 🇩🇪 693 115 16ms 12 May 2025 478th luuumine 🇫🇷 693 115 18ms 2 Dec 2025 478th Bmrl7 693 115 12ms 25 Dec 2025 First Prev 401–480 of 888 Next Last