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 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 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 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 Chars Time Submitted 524th inventshah 804 91 1ms 4 Jun 2022 524th nwellnhof 🇩🇪 804 91 2ms 8 Jul 2022 524th retrohun 804 91 1ms 30 Apr 2023 524th kritixilithos 804 91 1ms 22 May 2024 530th primo-ppcg 🇹🇭 802 61 91ms 9 Feb 2022 531st Bubbler-4 801 72 163ms 20 Feb 2019 531st xnor-gate 801 72 156ms 22 Dec 2021 531st tobeannouncd 801 72 177ms 11 Jan 2024 534th DialFrost 🇸🇬 800 62 57ms 21 Jan 2025 535th pardouin 🇫🇷 800 106 277ms 24 Aug 2024 536th kevinmchung 799 59 10ms 24 Feb 2018 536th benwilliamgraham 799 59 10ms 26 Jan 2019 536th mogron 799 59 12ms 13 Dec 2019 536th mortimervonchappuis 799 59 10ms 17 Mar 2020 536th OllieBoyne 🇬🇧 799 59 10ms 16 Jan 2021 536th SnowballSH 799 59 10ms 31 Jan 2021 536th vishwathg 799 59 14ms 16 Aug 2022 536th StefanHabel 🇨🇦 799 59 10ms 11 Dec 2022 536th emirps 799 59 11ms 22 Feb 2023 536th AlexanderFair 799 59 10ms 2 Jul 2023 536th AVDestroyer 799 59 10ms 4 Sep 2023 536th eiburns 799 59 11ms 13 Sep 2023 536th m42km 799 59 8ms 7 Oct 2023 536th elgan65536 799 59 17ms 4 Apr 2024 536th KasperKivimaeki 🇫🇮 799 59 14ms 5 Jul 2025 536th dirckvdende 799 59 22ms 6 Jul 2025 552nd emplv 🇱🇻 797 62 10ms 15 Dec 2021 552nd rucin93 🇵🇱 797 62 12ms 19 Apr 2024 552nd vlpx 🇫🇮 797 62 10ms 18 Jun 2024 555th SirFireball3521 796 39 147ms 22 Mar 2023 556th primo-ppcg 🇹🇭 796 70 50ms 4 Jan 2024 556th stefangimmillaro 796 70 43ms 14 Jan 2024 558th clockworknazo 796 82 5ms 13 Oct 2022 558th ovs-code 🇩🇪 796 82 6ms 7 Feb 2023 560th MeWhenI 🇻🇦 795 44 4ms 12 Aug 2024 560th sisyphus-ppcg 🇦🇺 795 44 4ms 12 Aug 2024 560th DialFrost 🇸🇬 795 44 4ms 15 Aug 2024 560th ovs-code 🇩🇪 795 44 4ms 15 Aug 2024 560th Shanethegamer 🇺🇸 795 44 4ms 15 Aug 2024 560th GrayJoKing 🇦🇺 795 44 5ms 17 Aug 2024 560th emgordon154 795 44 5ms 19 Aug 2024 560th pardouin 🇫🇷 795 44 5ms 6 Sep 2024 560th sean-niemann 🇺🇸 795 44 4ms 13 Jan 2025 569th Yewzir 🇧🇪 792 54 10ms 14 Dec 2023 569th dokutan 792 54 7ms 19 May 2024 569th emgordon154 792 54 7ms 5 Dec 2024 569th edsrzf 🇳🇿 792 54 6ms 21 Jan 2025 569th kg583 🇺🇸 792 54 7ms 30 Jul 2025 574th neel11235813 791 55 397ms 10 Mar 2024 574th albanian-laundromat 791 55 350ms 7 Oct 2025 576th flawr 790 73 187ms 24 Feb 2019 576th GrayJoKing 🇦🇺 790 73 196ms 5 Dec 2020 576th Shanethegamer 🇺🇸 790 73 135ms 15 Jul 2021 576th yzhs 🇩🇪 790 73 149ms 24 Jul 2021 576th MeWhenI 🇻🇦 790 73 153ms 15 Sep 2021 576th sisyphus-ppcg 🇦🇺 790 73 130ms 16 Mar 2022 576th DaCuteRaccoon 790 73 175ms 30 Nov 2022 576th DialFrost 🇸🇬 790 73 184ms 28 Jan 2023 576th scpchicken 🇵🇼 790 73 174ms 7 Mar 2023 576th pardouin 🇫🇷 790 73 161ms 21 Sep 2024 576th LostSyntax21 🇬🇧 790 73 188ms 8 Jan 2025 587th Yewzir 🇧🇪 787 69 109ms 6 Dec 2023 588th MeWhenI 🇻🇦 787 93 1ms 18 May 2022 589th lifthrasiir 🇰🇷 786 28 3ms 29 Nov 2024 590th stevelamm 785 60 10ms 5 Oct 2018 590th tjtnorton 785 60 9ms 29 Nov 2018 590th giacomogallina 785 60 10ms 14 Jun 2019 590th cellobix 785 60 10ms 14 Aug 2019 590th mizuzimu 785 60 10ms 4 Feb 2020 590th ArmaanAS 785 60 9ms 8 Mar 2021 590th RDShah 785 60 10ms 26 Nov 2021 590th QuincyNash 🇺🇸 785 60 10ms 30 Nov 2022 590th msbranicky 785 60 10ms 25 Jul 2023 590th Hebelub 785 60 10ms 5 Jan 2024 590th dokutan 785 60 10ms 23 Jan 2024 First Prev 526–600 of 3,071 Next Last