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 Gray Code Decoder Gray Code Encoder 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 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 Gray Code Decoder Gray Code Encoder 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 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 320th Shanethegamer 🇺🇸 790 84 471ms 3 Oct 2024 322nd lifthrasiir 🇰🇷 790 101 17ms 21 Nov 2024 322nd btjones0 790 101 18ms 2 Dec 2024 324th pardouin 🇫🇷 789 81 137ms 29 Jan 2025 324th ovs-code 🇩🇪 789 81 133ms 17 Apr 2025 326th Shanethegamer 🇺🇸 789 88 114ms 4 Oct 2024 327th edsrzf 🇳🇿 789 119 155ms 23 Jul 2025 327th jusaka 789 119 200ms 3 days ago 329th MeWhenI 🇻🇦 789 122 39ms 5 Oct 2024 330th emgordon154 789 151 340ms 17 Jan 2025 331st emgordon154 787 164 1,756ms 22 Dec 2025 332nd KingSkyrock 🇺🇸 786 82 11ms 14 Oct 2024 333rd retrohun 786 90 2ms 8 days ago 334th stefangimmillaro 785 61 35ms 1 Oct 2024 335th namelessiw 785 119 467ms 9 Oct 2025 336th SirBogman 🇺🇸 785 138 39ms 11 Jul 2025 337th Shanethegamer 🇺🇸 784 91 441ms 3 Oct 2024 338th Shanethegamer 🇺🇸 784 152 337ms 3 Oct 2024 338th targrik 784 152 342ms 7 Jul 2025 340th annaproxy 782 102 18ms 1 Oct 2024 340th snoozingnewt 🇨🇦 782 102 10ms 6 Dec 2025 340th Flekay 🇩🇪 782 102 18ms 19 Feb 2026 340th dokutan 782 102 19ms 12 Mar 2026 340th aksyristos 782 102 19ms 11 days ago 340th jusaka 782 102 18ms 10 days ago 346th SirBogman 🇺🇸 780 50 32ms 8 Jul 2025 347th duckyluuk 🇳🇱 780 97 9ms 25 Nov 2025 348th albanian-laundromat 🇺🇸 779 74 1,086ms 3 Nov 2025 349th GrayJoKing 🇦🇺 779 82 138ms 1 Oct 2024 350th sean-niemann 🇺🇸 779 107 375ms 3 Oct 2024 351st m-tkach 🇺🇦 779 131 2ms 4 Oct 2024 352nd Shanethegamer 🇺🇸 778 120 364ms 24 Sep 2025 353rd uttumuttu 🇫🇮 777 83 11ms 1 Oct 2024 353rd KatieLG 🇬🇧 777 83 17ms 1 Oct 2024 353rd Larento 777 83 13ms 4 Nov 2024 353rd Andrey-Plotnikov 777 83 13ms 13 Jan 2025 353rd nathanadams 🇳🇿 777 83 11ms 6 Oct 2025 358th adriweb 🇫🇷 777 102 1ms 5 Oct 2024 359th sean-niemann 🇺🇸 777 105 461ms 1 Oct 2024 360th AlephSquirrel 776 124 7ms 21 Oct 2024 361st Natanaelel 🇸🇪 775 143 145ms 20 Apr 2025 362nd sisyphus-ppcg 🇦🇺 773 62 36ms 3 Oct 2024 363rd DialFrost 🇸🇬 773 90 2ms 18 Nov 2025 364th DialFrost 🇸🇬 772 121 369ms 24 Sep 2025 365th emgordon154 770 83 127ms 18 Nov 2024 366th targrik 770 88 13ms 7 Feb 2025 367th Waffle3z 770 103 2ms 2 Oct 2024 368th xsot 🇸🇬 770 125 7ms 20 Oct 2024 369th retrohun 769 63 20ms 2 Oct 2024 370th luuumine 🇫🇷 769 92 1ms 5 Dec 2025 370th bzd7 769 92 2ms 7 Dec 2025 372nd ovs-code 🇩🇪 769 122 148ms 25 Apr 2025 373rd lifthrasiir 🇰🇷 768 37 2ms 27 Nov 2024 374th didion0 🇺🇸 768 84 15ms 10 Jan 2025 375th jatloe 767 104 10ms 1 Oct 2024 376th MeWhenI 🇻🇦 765 109 372ms 2 Oct 2024 377th albanian-laundromat 🇺🇸 763 118 90ms 13 Nov 2025 378th Shanethegamer 🇺🇸 763 124 6ms 4 Oct 2024 379th GolfingSuccess 🇬🇷 762 70 6ms 6 Jun 2025 380th MeWhenI 🇻🇦 761 89 6ms 2 Oct 2024 381st emgordon154 760 63 35ms 18 Nov 2024 381st SirBogman 🇺🇸 760 63 35ms 19 Jul 2025 383rd sean-niemann 🇺🇸 760 93 1ms 24 Oct 2024 384th fourth-bit 760 105 18ms 1 Oct 2024 384th jared-hughes 760 105 17ms 3 Oct 2024 384th mattyhempstead 760 105 28ms 7 Oct 2024 387th DialFrost 🇸🇬 759 76 1,034ms 30 Aug 2025 388th weliveinhell 🇭🇹 759 85 11ms 1 Oct 2024 388th SteRoy 759 85 15ms 13 May 2025 390th CLOStrophobic 🇮🇹 758 160 40ms 27 Feb 2025 391st albanian-laundromat 🇺🇸 758 161 27ms 10 Mar 2026 392nd MeWhenI 🇻🇦 754 88 524ms 2 Oct 2024 392nd albanian-laundromat 🇺🇸 754 88 521ms 3 Nov 2025 394th 0xjac 🇨🇭 754 158 321ms 17 Jun 2025 395th MeWhenI 🇻🇦 754 162 26ms 2 Oct 2024 396th GrayJoKing 🇦🇺 753 90 5ms 1 Oct 2024 397th stefangimmillaro 752 94 1ms 30 Oct 2024 397th emgordon154 752 94 2ms 7 Feb 2026 399th davecame 752 106 18ms 1 Oct 2024 399th starfihs 752 106 11ms 2 Oct 2024 First Prev 321–400 of 934 Next Last