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 318th Flekay 🇩🇪 782 102 18ms 3 hours ago 322nd SirBogman 🇺🇸 780 50 32ms 8 Jul 2025 323rd GrayJoKing 🇦🇺 779 82 134ms 1 Oct 2024 324th sean-niemann 🇺🇸 779 107 332ms 3 Oct 2024 325th Shanethegamer 🇺🇸 778 120 364ms 24 Sep 2025 326th albanian-laundromat 777 74 1,047ms 3 Nov 2025 327th adriweb 🇫🇷 777 102 1ms 5 Oct 2024 328th uttumuttu 🇫🇮 776 83 12ms 1 Oct 2024 328th KatieLG 🇬🇧 776 83 10ms 1 Oct 2024 328th Larento 776 83 15ms 4 Nov 2024 328th Andrey-Plotnikov 776 83 10ms 13 Jan 2025 328th nathanadams 🇳🇿 776 83 10ms 6 Oct 2025 333rd m-tkach 🇺🇦 776 131 2ms 4 Oct 2024 334th duckyluuk 🇳🇱 775 97 10ms 25 Nov 2025 335th Natanaelel 🇸🇪 775 143 145ms 20 Apr 2025 336th DialFrost 🇸🇬 772 121 369ms 24 Sep 2025 337th sisyphus-ppcg 🇦🇺 771 62 40ms 3 Oct 2024 338th sean-niemann 🇺🇸 771 105 461ms 1 Oct 2024 339th emgordon154 770 83 134ms 18 Nov 2024 340th targrik 770 88 8ms 7 Feb 2025 341st Waffle3z 770 103 2ms 2 Oct 2024 342nd retrohun 769 63 20ms 2 Oct 2024 343rd DialFrost 🇸🇬 769 90 2ms 18 Nov 2025 344th luuumine 🇫🇷 768 92 1ms 5 Dec 2025 344th bzd7 768 92 2ms 7 Dec 2025 346th lifthrasiir 🇰🇷 767 37 2ms 27 Nov 2024 347th jatloe 767 104 10ms 1 Oct 2024 348th didion0 🇺🇸 766 84 14ms 10 Jan 2025 349th MeWhenI 🇻🇦 765 109 334ms 2 Oct 2024 349th edsrzf 🇳🇿 765 109 365ms 23 Jul 2025 351st ovs-code 🇩🇪 764 122 157ms 25 Apr 2025 352nd albanian-laundromat 763 118 84ms 13 Nov 2025 353rd Shanethegamer 🇺🇸 763 124 6ms 4 Oct 2024 354th GolfingSuccess 🇬🇷 762 70 6ms 6 Jun 2025 355th MeWhenI 🇻🇦 761 89 6ms 2 Oct 2024 356th emgordon154 759 63 35ms 18 Nov 2024 356th SirBogman 🇺🇸 759 63 33ms 19 Jul 2025 358th sean-niemann 🇺🇸 759 93 1ms 24 Oct 2024 359th fourth-bit 759 105 17ms 1 Oct 2024 359th jared-hughes 759 105 16ms 3 Oct 2024 359th mattyhempstead 759 105 26ms 7 Oct 2024 362nd DialFrost 🇸🇬 757 76 1,013ms 30 Aug 2025 363rd weliveinhell 🇭🇹 757 85 10ms 1 Oct 2024 363rd SteRoy 757 85 10ms 13 May 2025 365th DialFrost 🇸🇬 754 131 7ms 11 Dec 2024 366th 0xjac 🇨🇭 754 158 287ms 17 Jun 2025 367th MeWhenI 🇻🇦 753 88 440ms 2 Oct 2024 367th albanian-laundromat 753 88 462ms 3 Nov 2025 369th GrayJoKing 🇦🇺 753 90 5ms 1 Oct 2024 370th davecame 752 106 17ms 1 Oct 2024 370th starfihs 752 106 10ms 2 Oct 2024 370th rschwa6308 🇺🇸 752 106 16ms 28 Oct 2024 370th snydej 752 106 17ms 21 Nov 2024 370th andrewjc2000 752 106 17ms 17 Jul 2025 370th qpwoeirut 752 106 10ms 19 Aug 2025 370th KatieLG 🇬🇧 752 106 17ms 8 days ago 377th stefangimmillaro 751 94 1ms 30 Oct 2024 377th emgordon154 751 94 2ms 11 days ago 379th stackofbears 750 52 34ms 14 Mar 2025 380th MeWhenI 🇻🇦 750 89 2,127ms 24 Oct 2024 381st Maznek 749 86 11ms 4 Oct 2024 382nd sean-niemann 🇺🇸 749 116 409ms 24 Oct 2024 382nd luuumine 🇫🇷 749 116 398ms 15 Dec 2025 384th MeWhenI 🇻🇦 749 162 26ms 2 Oct 2024 385th MeWhenI 🇻🇦 748 106 1ms 2 Oct 2024 386th Shanethegamer 🇺🇸 748 132 7ms 2 Oct 2024 387th rak1507 🇬🇧 747 38 2ms 30 Dec 2024 388th Shanethegamer 🇺🇸 747 64 35ms 3 Oct 2024 388th Andriamanitra 🇫🇮 747 64 36ms 5 Oct 2024 390th commandz0 🇺🇸 745 107 17ms 7 Oct 2024 390th zbreit 🇺🇸 745 107 16ms 29 Oct 2024 390th StardustGogeta 745 107 17ms 30 Oct 2024 390th ZakkkkAttackkkk 🇵🇭 745 107 16ms 8 Feb 2025 390th InigoK 🇺🇸 745 107 17ms 22 Sep 2025 395th Shanethegamer 🇺🇸 744 121 98ms 3 Oct 2024 396th Natanaelel 🇸🇪 743 53 3ms 10 Jan 2026 397th sean-niemann 🇺🇸 743 93 111ms 24 Oct 2024 398th SirBogman 🇺🇸 741 63 283ms 23 Jul 2025 399th Shanethegamer 🇺🇸 741 90 2,349ms 28 Oct 2024 399th ScottHamper 741 90 2,298ms 11 Dec 2025 First Prev 321–400 of 891 Next Last