Happy Numbers (Long) in all languages in bytes. 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 Minesweeper 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 Binary Lambda Calculus Calendar 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 Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi 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 Minesweeper 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 Binary Lambda Calculus Calendar 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 Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi Turtle Tutorial # Golfer Points Bytes Time Submitted 526th janbehrens 🇩🇪 850 140 263ms 20 Sep 2021 527th KatieLG 🇬🇧 848 79 630ms 16 Jan 2024 527th MeWhenI 🇻🇦 848 79 556ms 17 Jan 2024 527th duckyluuk 🇳🇱 848 79 585ms 20 Jun 2024 527th namelessiw 848 79 543ms 14 Jul 2024 527th lifthrasiir 🇰🇷 848 79 415ms 2 Dec 2024 532nd MeWhenI 🇻🇦 847 96 121ms 15 Nov 2022 533rd stefangimmillaro 847 111 338ms 6 Oct 2025 533rd kmathis22 847 111 345ms 3 days ago 533rd ethanlally 847 111 353ms 2 hours ago 536th Steffan153 🇫🇮 846 89 18ms 3 Feb 2023 536th sisyphus-ppcg 🇦🇺 846 89 19ms 4 Feb 2023 536th edsrzf 🇳🇿 846 89 14ms 8 days ago 539th Steffan153 🇫🇮 846 99 14ms 12 Dec 2023 540th MeWhenI 🇻🇦 846 163 943ms 28 Mar 2025 541st Yewzir 🇧🇪 845 118 125ms 5 Feb 2024 542nd rak1507 🇬🇧 844 36 37ms 20 Sep 2021 543rd rucin93 🇵🇱 844 86 3ms 3 days ago 544th ovs-code 🇩🇪 844 181 1,530ms 14 Sep 2025 544th jared-hughes 844 181 1,584ms 16 Sep 2025 544th MeWhenI 🇻🇦 844 181 1,567ms 15 days ago 544th Yewzir 🇧🇪 844 181 1,601ms 8 days ago 548th albanian-laundromat 843 73 759ms 23 Sep 2025 549th itsjustfreekie 843 83 284ms 20 Sep 2021 549th neihousaigaai 843 83 20ms 3 Jan 2022 549th cesarm4 843 83 191ms 16 Apr 2022 549th nstearns96 🇬🇧 843 83 245ms 27 Jan 2023 549th randolchance 843 83 20ms 16 Feb 2023 549th galloj 🇨🇿 843 83 3,188ms 5 Mar 2023 549th yzhs 🇩🇪 843 83 228ms 23 Jun 2023 549th Yewzir 🇧🇪 843 83 225ms 8 Oct 2023 549th m42km 843 83 303ms 12 Oct 2023 558th emplv 🇱🇻 842 78 39ms 19 Apr 2024 559th pardouin 🇫🇷 842 83 3ms 8 Oct 2024 559th LostSyntax21 🇬🇧 842 83 3ms 8 Jan 2025 561st DialFrost 🇸🇬 842 98 379ms 6 days ago 562nd ovs-code 🇩🇪 841 190 18ms 9 Jul 2024 563rd Waffle3z 840 91 3ms 19 Sep 2021 563rd primo-ppcg 🇹🇭 840 91 2ms 23 Sep 2021 563rd JayXon 🇺🇸 840 91 3ms 3 Oct 2021 563rd Lydxn 🇨🇦 840 91 3ms 9 Apr 2022 563rd btnlq 840 91 3ms 27 Dec 2022 563rd FlyingPenguin223 840 91 2ms 29 Oct 2024 569th Shanethegamer 🇺🇸 840 95 101ms 14 Oct 2022 569th emplv 🇱🇻 840 95 103ms 28 Oct 2022 569th Yewzir 🇧🇪 840 95 105ms 28 Mar 2024 572nd Shanethegamer 🇺🇸 839 31 6ms 13 Jan 2022 573rd anter69 🇭🇺 839 57 38ms 30 Sep 2021 574th ovs-code 🇩🇪 839 69 157ms 3 Aug 2024 575th SirBogman 🇺🇸 838 80 524ms 15 Jan 2024 575th Shanethegamer 🇺🇸 838 80 579ms 16 Jan 2024 575th snoozingnewt 🇺🇸 838 80 911ms 28 Sep 2025 578th Shanethegamer 🇺🇸 838 95 129ms 16 Dec 2022 579th Irratix 🇳🇱 838 112 62ms 3 Jan 2022 580th lynn 838 119 150ms 10 Mar 2022 580th ovs-code 🇩🇪 838 119 130ms 23 Jun 2023 580th mousetail 🇳🇱 838 119 134ms 15 Jan 2024 583rd edsrzf 🇳🇿 837 100 21ms 5 Jan 2025 584th Shanethegamer 🇺🇸 837 102 1,350ms 20 Mar 2023 585th Yewzir 🇧🇪 834 87 2ms 2 days ago 586th stackofbears 834 99 460ms 21 Mar 2022 587th Bonjour27891 🇻🇳 833 84 68ms 9 Feb 2022 587th RDShah 833 84 334ms 11 May 2022 587th fredrik-bakke 🇳🇴 833 84 287ms 2 Oct 2022 587th jakobkordez 🇸🇮 833 84 23ms 30 Oct 2022 587th thehylian 833 84 19ms 2 Jan 2023 587th badboj40 833 84 297ms 12 Feb 2023 587th firegene 🇮🇪 833 84 21ms 22 Dec 2023 587th moustave 833 84 170ms 26 Nov 2024 587th dokutan 833 84 241ms 24 Dec 2024 596th albanian-laundromat 833 105 45ms 7 Sep 2025 597th prplz 🇦🇺 831 103 115ms 18 Dec 2021 597th dokutan 831 103 81ms 16 days ago 599th MeWhenI 🇻🇦 831 113 57ms 29 Nov 2022 600th Shanethegamer 🇺🇸 831 120 116ms 13 Jan 2022 First Prev 526–600 of 2,002 Next Last