Happy Numbers in all languages in chars. Cheevos Holes Recent Holes Langs Medals Misc 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 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 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 Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir 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 Erlang 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 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 Erlang 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 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 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 Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 826th Steffan153 🇫🇮 696 99 59ms 28 Jan 2023 826th ovs-code 🇩🇪 696 99 62ms 3 Jun 2024 826th roupiq 🇵🇱 696 99 61ms 8 Jun 2024 829th xorraxrax 693 68 12ms 19 Oct 2019 829th NewDefectus 🇮🇱 693 68 11ms 1 Nov 2020 829th ydevor 🇮🇱 693 68 10ms 26 Nov 2020 829th jacklynnepenick 693 68 51ms 17 Aug 2021 829th aposteriorist 🇨🇦 693 68 10ms 6 Feb 2022 829th PowerR0 693 68 10ms 25 Aug 2022 829th SB-945 693 68 17ms 31 Mar 2024 829th Troon 693 68 10ms 11 Feb 2025 837th sisyphus-ppcg 🇦🇺 692 43 2ms 3 Nov 2020 837th pandapawskat 692 43 3ms 20 Sep 2021 837th stefangimmillaro 692 43 2ms 23 Apr 2022 840th o0lit3 🇺🇸 692 50 11ms 19 Apr 2021 840th armin-k1 692 50 9ms 8 Sep 2021 842nd Alex-x90 🇺🇸 692 76 2ms 3 Dec 2022 843rd anter69 🇭🇺 691 55 1,011ms 10 Mar 2025 844th GrayJoKing 🇦🇺 691 61 150ms 13 Mar 2022 845th btnlq 691 63 4ms 15 Jul 2023 846th SirBogman 🇺🇸 690 63 405ms 15 Jan 2024 846th GolfingSuccess 🇬🇷 690 63 336ms 30 Jan 2024 848th inventshah 690 70 3ms 9 Sep 2022 849th labster 689 45 130ms 23 Feb 2018 850th JDiLenarda 🇫🇷 689 61 1,211ms 9 Oct 2020 851st jared-hughes 689 100 53ms 20 Jul 2022 852nd gnuvince 688 32 10ms 2 Aug 2024 852nd codereport 🇨🇦 688 32 3ms 21 Apr 2025 854th marshallward 🇺🇸 688 81 41ms 2 Sep 2022 855th JayXon 🇺🇸 688 102 7ms 15 Mar 2023 856th PatrickStephansen 🇿🇦 686 72 13ms 3 Nov 2020 856th KatieLG 🇬🇧 686 72 9ms 16 Apr 2021 856th neihousaigaai 686 72 10ms 18 Apr 2021 856th two-bad 🇬🇧 686 72 11ms 25 Feb 2024 860th MeWhenI 🇻🇦 686 75 40ms 20 Jun 2022 861st rustyflamingo 685 49 551ms 22 Sep 2022 861st antimon2 🇯🇵 685 49 565ms 15 Oct 2022 861st alemelis 685 49 539ms 1 Mar 2023 861st HPWiz 🇳🇿 685 49 554ms 9 Mar 2023 861st ovs-code 🇩🇪 685 49 562ms 24 Oct 2023 861st MarcMush 🇫🇷 685 49 589ms 5 Jan 2024 861st DialFrost 🇸🇬 685 49 541ms 5 Jan 2024 861st twolfive 685 49 552ms 5 Oct 2024 869th galloj 🇨🇿 684 107 1ms 28 Aug 2022 870th j-Ewan 683 40 33ms 22 Feb 2022 871st Espiobest 683 69 19ms 26 Feb 2021 871st cbondurant 683 69 10ms 10 May 2021 871st hellwue 683 69 10ms 8 Feb 2023 871st Vaekor 683 69 10ms 9 Jul 2023 871st jatloe 683 69 107ms 27 Sep 2024 876th sean-niemann 🇺🇸 683 77 2ms 29 Nov 2022 877th DialFrost 🇸🇬 682 93 44ms 16 Feb 2025 878th MeWhenI 🇻🇦 682 101 59ms 8 May 2022 878th janbehrens 🇩🇪 682 101 65ms 26 Nov 2023 880th retrohun 682 191 11ms 27 Dec 2022 881st sisyphus-ppcg 🇦🇺 681 67 4ms 2 Jul 2023 881st targrik 681 67 6ms 17 Jul 2025 883rd m-tkach 🇺🇦 680 64 376ms 30 Jan 2024 884th Yewzir 🇧🇪 680 87 2ms 21 Jan 2024 884th rucin93 🇵🇱 680 87 2ms 22 Apr 2025 886th MeWhenI 🇻🇦 679 62 162ms 11 Nov 2021 887th Irratix 🇳🇱 678 56 1,042ms 25 Mar 2021 887th emgordon154 678 56 911ms 18 Nov 2024 889th emplv 🇱🇻 678 63 144ms 17 Jul 2025 890th didion0 🇺🇸 677 73 13ms 22 Apr 2021 890th itsh01 677 73 14ms 16 Aug 2021 890th c0d3-4-F00d 🇩🇪 677 73 10ms 5 Jan 2022 890th DaCuteRaccoon 677 73 11ms 30 Nov 2022 890th inventshah 677 73 15ms 28 Jan 2023 890th snoozingnewt 🇺🇸 677 73 13ms 1 Sep 2024 896th primo-ppcg 🇹🇭 676 105 2ms 3 Oct 2020 897th Attero 🇸🇪 675 46 132ms 4 May 2020 898th primo-ppcg 🇹🇭 675 57 4ms 27 Apr 2023 898th GrayJoKing 🇦🇺 675 57 4ms 20 Aug 2023 898th emgordon154 675 57 4ms 10 Jan 2025 First Prev 826–900 of 3,058 Next Last