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 522nd retrohun 804 91 1ms 30 Apr 2023 522nd kritixilithos 804 91 1ms 22 May 2024 528th primo-ppcg 🇹🇭 802 61 91ms 9 Feb 2022 529th Bubbler-4 801 72 163ms 20 Feb 2019 529th xnor-gate 801 72 156ms 22 Dec 2021 529th tobeannouncd 801 72 177ms 11 Jan 2024 532nd DialFrost 🇸🇬 800 62 57ms 21 Jan 2025 533rd pardouin 🇫🇷 800 106 277ms 24 Aug 2024 534th kevinmchung 799 59 10ms 24 Feb 2018 534th benwilliamgraham 799 59 10ms 26 Jan 2019 534th mogron 799 59 12ms 13 Dec 2019 534th mortimervonchappuis 799 59 10ms 17 Mar 2020 534th OllieBoyne 🇬🇧 799 59 10ms 16 Jan 2021 534th SnowballSH 799 59 10ms 31 Jan 2021 534th vishwathg 799 59 14ms 16 Aug 2022 534th StefanHabel 🇨🇦 799 59 10ms 11 Dec 2022 534th emirps 799 59 11ms 22 Feb 2023 534th AlexanderFair 799 59 10ms 2 Jul 2023 534th AVDestroyer 799 59 10ms 4 Sep 2023 534th eiburns 799 59 11ms 13 Sep 2023 534th m42km 799 59 8ms 7 Oct 2023 534th elgan65536 799 59 17ms 4 Apr 2024 534th KasperKivimaeki 🇫🇮 799 59 14ms 5 Jul 2025 534th dirckvdende 799 59 22ms 6 Jul 2025 550th emplv 🇱🇻 797 62 10ms 15 Dec 2021 550th rucin93 🇵🇱 797 62 12ms 19 Apr 2024 550th vlpx 🇫🇮 797 62 10ms 18 Jun 2024 553rd SirFireball3521 796 39 147ms 22 Mar 2023 554th primo-ppcg 🇹🇭 796 70 50ms 4 Jan 2024 554th stefangimmillaro 796 70 43ms 14 Jan 2024 556th clockworknazo 796 82 5ms 13 Oct 2022 556th ovs-code 🇩🇪 796 82 6ms 7 Feb 2023 558th MeWhenI 🇻🇦 795 44 4ms 12 Aug 2024 558th sisyphus-ppcg 🇦🇺 795 44 4ms 12 Aug 2024 558th DialFrost 🇸🇬 795 44 4ms 15 Aug 2024 558th ovs-code 🇩🇪 795 44 4ms 15 Aug 2024 558th Shanethegamer 🇺🇸 795 44 4ms 15 Aug 2024 558th GrayJoKing 🇦🇺 795 44 5ms 17 Aug 2024 558th emgordon154 795 44 5ms 19 Aug 2024 558th pardouin 🇫🇷 795 44 5ms 6 Sep 2024 558th sean-niemann 🇺🇸 795 44 4ms 13 Jan 2025 567th Yewzir 🇧🇪 792 54 10ms 14 Dec 2023 567th dokutan 792 54 7ms 19 May 2024 567th emgordon154 792 54 7ms 5 Dec 2024 567th edsrzf 🇳🇿 792 54 6ms 21 Jan 2025 567th kg583 🇺🇸 792 54 7ms 30 Jul 2025 572nd neel11235813 791 55 397ms 10 Mar 2024 572nd albanian-laundromat 791 55 350ms 18 days ago 574th flawr 790 73 187ms 24 Feb 2019 574th GrayJoKing 🇦🇺 790 73 196ms 5 Dec 2020 574th Shanethegamer 🇺🇸 790 73 135ms 15 Jul 2021 574th yzhs 🇩🇪 790 73 149ms 24 Jul 2021 574th MeWhenI 🇻🇦 790 73 153ms 15 Sep 2021 574th sisyphus-ppcg 🇦🇺 790 73 130ms 16 Mar 2022 574th DaCuteRaccoon 790 73 175ms 30 Nov 2022 574th DialFrost 🇸🇬 790 73 184ms 28 Jan 2023 574th scpchicken 🇵🇼 790 73 174ms 7 Mar 2023 574th pardouin 🇫🇷 790 73 161ms 21 Sep 2024 574th LostSyntax21 🇬🇧 790 73 188ms 8 Jan 2025 585th Yewzir 🇧🇪 787 69 109ms 6 Dec 2023 586th MeWhenI 🇻🇦 787 93 1ms 18 May 2022 587th lifthrasiir 🇰🇷 786 28 3ms 29 Nov 2024 588th stevelamm 785 60 10ms 5 Oct 2018 588th tjtnorton 785 60 9ms 29 Nov 2018 588th giacomogallina 785 60 10ms 14 Jun 2019 588th cellobix 785 60 10ms 14 Aug 2019 588th mizuzimu 785 60 10ms 4 Feb 2020 588th ArmaanAS 785 60 9ms 8 Mar 2021 588th RDShah 785 60 10ms 26 Nov 2021 588th QuincyNash 🇺🇸 785 60 10ms 30 Nov 2022 588th msbranicky 785 60 10ms 25 Jul 2023 588th Hebelub 785 60 10ms 5 Jan 2024 588th dokutan 785 60 10ms 23 Jan 2024 588th wh3n3v3r 🇨🇿 785 60 10ms 16 Nov 2024 588th JunkIce 785 60 10ms 23 Feb 2025 First Prev 526–600 of 3,059 Next Last