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 Continued Fractions 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 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four 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 Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript 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 APL 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 ><> ALGOL 68 ArkScript 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 APL 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 Continued Fractions 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 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four 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 Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 321st stefangimmillaro 785 61 35ms 1 Oct 2024 322nd edsrzf 🇳🇿 785 119 155ms 23 Jul 2025 322nd namelessiw 785 119 565ms 9 Oct 2025 324th SirBogman 🇺🇸 785 138 39ms 11 Jul 2025 325th Shanethegamer 🇺🇸 784 91 442ms 3 Oct 2024 326th Shanethegamer 🇺🇸 784 152 278ms 3 Oct 2024 326th targrik 784 152 304ms 7 Jul 2025 328th AlephSquirrel 783 124 7ms 21 Oct 2024 329th annaproxy 782 102 17ms 1 Oct 2024 329th snoozingnewt 🇨🇦 782 102 9ms 6 Dec 2025 329th Flekay 🇩🇪 782 102 18ms 19 Feb 2026 329th dokutan 782 102 16ms 7 days ago 333rd SirBogman 🇺🇸 780 50 32ms 8 Jul 2025 334th duckyluuk 🇳🇱 780 97 10ms 25 Nov 2025 335th albanian-laundromat 779 74 1,047ms 3 Nov 2025 336th GrayJoKing 🇦🇺 779 82 133ms 1 Oct 2024 337th sean-niemann 🇺🇸 779 107 375ms 3 Oct 2024 338th m-tkach 🇺🇦 779 131 2ms 4 Oct 2024 339th Shanethegamer 🇺🇸 778 120 364ms 24 Sep 2025 340th adriweb 🇫🇷 777 102 1ms 5 Oct 2024 341st uttumuttu 🇫🇮 776 83 8ms 1 Oct 2024 341st KatieLG 🇬🇧 776 83 11ms 1 Oct 2024 341st Larento 776 83 9ms 4 Nov 2024 341st Andrey-Plotnikov 776 83 9ms 13 Jan 2025 341st nathanadams 🇳🇿 776 83 11ms 6 Oct 2025 346th xsot 🇸🇬 776 125 7ms 20 Oct 2024 347th Natanaelel 🇸🇪 775 143 145ms 20 Apr 2025 348th sisyphus-ppcg 🇦🇺 772 62 38ms 3 Oct 2024 349th DialFrost 🇸🇬 772 121 369ms 24 Sep 2025 350th DialFrost 🇸🇬 771 90 2ms 18 Nov 2025 351st sean-niemann 🇺🇸 771 105 461ms 1 Oct 2024 352nd emgordon154 770 83 138ms 18 Nov 2024 353rd targrik 770 88 9ms 7 Feb 2025 354th Waffle3z 770 103 2ms 2 Oct 2024 355th retrohun 769 63 20ms 2 Oct 2024 356th luuumine 🇫🇷 768 92 1ms 5 Dec 2025 356th bzd7 768 92 2ms 7 Dec 2025 358th lifthrasiir 🇰🇷 767 37 2ms 27 Nov 2024 359th didion0 🇺🇸 767 84 11ms 10 Jan 2025 360th jatloe 767 104 10ms 1 Oct 2024 361st ovs-code 🇩🇪 766 122 156ms 25 Apr 2025 362nd MeWhenI 🇻🇦 765 109 372ms 2 Oct 2024 363rd albanian-laundromat 763 118 90ms 13 Nov 2025 364th Shanethegamer 🇺🇸 763 124 7ms 4 Oct 2024 365th GolfingSuccess 🇬🇷 762 70 6ms 6 Jun 2025 366th MeWhenI 🇻🇦 761 89 5ms 2 Oct 2024 367th emgordon154 760 63 35ms 18 Nov 2024 367th SirBogman 🇺🇸 760 63 35ms 19 Jul 2025 369th DialFrost 🇸🇬 759 76 1,013ms 30 Aug 2025 370th sean-niemann 🇺🇸 759 93 1ms 24 Oct 2024 371st fourth-bit 759 105 17ms 1 Oct 2024 371st jared-hughes 759 105 16ms 3 Oct 2024 371st mattyhempstead 759 105 26ms 7 Oct 2024 374th albanian-laundromat 759 161 27ms 10 days ago 375th weliveinhell 🇭🇹 758 85 10ms 1 Oct 2024 375th SteRoy 758 85 11ms 13 May 2025 377th CLOStrophobic 🇮🇹 758 160 40ms 27 Feb 2025 378th MeWhenI 🇻🇦 754 88 440ms 2 Oct 2024 378th albanian-laundromat 754 88 462ms 3 Nov 2025 380th 0xjac 🇨🇭 754 158 266ms 17 Jun 2025 381st MeWhenI 🇻🇦 754 162 26ms 2 Oct 2024 382nd GrayJoKing 🇦🇺 753 90 5ms 1 Oct 2024 383rd davecame 752 106 17ms 1 Oct 2024 383rd starfihs 752 106 10ms 2 Oct 2024 383rd rschwa6308 🇺🇸 752 106 16ms 28 Oct 2024 383rd snydej 752 106 17ms 21 Nov 2024 383rd andrewjc2000 752 106 17ms 17 Jul 2025 383rd qpwoeirut 752 106 10ms 19 Aug 2025 383rd KatieLG 🇬🇧 752 106 17ms 11 Feb 2026 390th stefangimmillaro 751 94 1ms 30 Oct 2024 390th emgordon154 751 94 2ms 7 Feb 2026 392nd stackofbears 750 52 34ms 14 Mar 2025 393rd MeWhenI 🇻🇦 750 89 2,621ms 24 Oct 2024 394th Maznek 749 86 10ms 4 Oct 2024 395th sean-niemann 🇺🇸 749 116 453ms 24 Oct 2024 395th luuumine 🇫🇷 749 116 461ms 15 Dec 2025 397th Shanethegamer 🇺🇸 748 64 36ms 3 Oct 2024 397th Andriamanitra 🇫🇮 748 64 35ms 5 Oct 2024 399th MeWhenI 🇻🇦 748 106 1ms 2 Oct 2024 400th rak1507 🇬🇧 747 38 2ms 30 Dec 2024 First Prev 321–400 of 911 Next Last