Happy Numbers 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 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 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 376th inventshah 919 66 2,116ms 24 Oct 2024 376th btnlq 919 66 2,855ms 26 Oct 2024 376th stefangimmillaro 919 66 3,070ms 29 Oct 2024 376th pardouin 🇫🇷 919 66 3,083ms 31 Oct 2024 376th JayXon 🇺🇸 919 66 3,059ms 7 Nov 2024 376th emgordon154 919 66 3,099ms 20 Nov 2024 382nd Lydxn 🇨🇦 919 72 2ms 10 Sep 2022 382nd GrayJoKing 🇦🇺 919 72 2ms 10 Sep 2022 382nd JayXon 🇺🇸 919 72 2ms 10 Sep 2022 382nd btnlq 919 72 2ms 11 Sep 2022 382nd Steffan153 🇫🇮 919 72 3ms 19 Aug 2024 387th bforte 919 74 144ms 9 Dec 2018 387th annaproxy 919 74 152ms 12 Jan 2022 387th rak1507 🇬🇧 919 74 157ms 23 Feb 2022 387th snoozingnewt 🇺🇸 919 74 150ms 1 Sep 2024 387th Natanaelel 🇸🇪 919 74 157ms 31 May 2025 392nd primo-ppcg 🇹🇭 918 41 159ms 6 Oct 2020 392nd Natanaelel 🇸🇪 918 41 126ms 7 Oct 2021 392nd sisyphus-ppcg 🇦🇺 918 41 162ms 31 Jan 2023 395th Steffan153 🇫🇮 918 64 7ms 11 Dec 2023 395th Yewzir 🇧🇪 918 64 10ms 14 Dec 2023 395th Lydxn 🇨🇦 918 64 8ms 20 Dec 2023 395th dokutan 918 64 7ms 19 May 2024 395th emgordon154 918 64 7ms 5 Dec 2024 395th edsrzf 🇳🇿 918 64 6ms 21 Jan 2025 395th sean-niemann 🇺🇸 918 64 10ms 19 Apr 2025 395th kg583 🇺🇸 918 64 7ms 30 Jul 2025 403rd primo-ppcg 🇹🇭 918 80 321ms 21 Nov 2021 403rd prplz 🇦🇺 918 80 367ms 21 Nov 2021 403rd annaproxy 918 80 361ms 5 May 2022 403rd tomtheisen 🇺🇸 918 80 295ms 17 Jan 2023 403rd Steffan153 🇫🇮 918 80 391ms 28 Jan 2023 403rd AdrienHache 🇫🇷 918 80 364ms 30 May 2023 403rd MeWhenI 🇻🇦 918 80 387ms 26 Jul 2023 403rd DialFrost 🇸🇬 918 80 352ms 26 Dec 2024 403rd sean-niemann 🇺🇸 918 80 319ms 9 Jan 2025 403rd Yax42 🇫🇷 918 80 351ms 15 Aug 2025 413th Lydxn 🇨🇦 917 63 3ms 16 Jul 2023 413th Steffan153 🇫🇮 917 63 133ms 22 Aug 2024 413th sean-niemann 🇺🇸 917 63 136ms 22 Aug 2024 413th JayXon 🇺🇸 917 63 142ms 23 Aug 2024 413th lukegustafson 🇺🇸 917 63 135ms 12 Sep 2024 413th emplv 🇱🇻 917 63 133ms 17 Jul 2025 419th lifthrasiir 🇰🇷 917 77 9ms 11 Dec 2024 419th jared-hughes 917 77 7ms 15 Dec 2024 421st lynn 916 54 192ms 25 May 2022 422nd GrayJoKing 🇦🇺 916 69 4ms 29 Apr 2021 422nd xsot 🇸🇬 916 69 3ms 16 Jun 2024 424th AlephSquirrel 916 83 6ms 21 Jan 2023 424th edsrzf 🇳🇿 916 83 5ms 11 Apr 2025 424th kg583 🇺🇸 916 83 6ms 3 May 2025 427th bendiscz 916 111 267ms 20 Apr 2020 427th emplv 🇱🇻 916 111 255ms 31 Aug 2021 427th jared-hughes 916 111 255ms 27 Feb 2024 427th edsrzf 🇳🇿 916 111 263ms 26 Oct 2024 427th keelimeguy 🇺🇸 916 111 259ms 28 Apr 2025 432nd btnlq 915 61 2ms 5 Nov 2022 433rd Lydxn 🇨🇦 915 76 104ms 14 Oct 2022 433rd sean-niemann 🇺🇸 915 76 103ms 14 Oct 2022 433rd JayXon 🇺🇸 915 76 104ms 14 Oct 2022 433rd MeWhenI 🇻🇦 915 76 103ms 14 Oct 2022 433rd Steffan153 🇫🇮 915 76 106ms 14 Oct 2022 433rd stefangimmillaro 915 76 104ms 14 Oct 2022 433rd Shanethegamer 🇺🇸 915 76 107ms 13 Mar 2023 433rd DialFrost 🇸🇬 915 76 112ms 26 Dec 2024 441st nwellnhof 🇩🇪 915 78 2ms 7 Jan 2021 441st Alex-x90 🇺🇸 915 78 2ms 27 Jan 2023 441st inventshah 915 78 2ms 27 Jan 2023 441st Steffan153 🇫🇮 915 78 2ms 28 Jan 2023 441st sean-niemann 🇺🇸 915 78 2ms 7 Mar 2025 446th Lydxn 🇨🇦 914 70 39ms 21 Jun 2022 447th sisyphus-ppcg 🇦🇺 914 91 1ms 18 May 2022 447th ovs-code 🇩🇪 914 91 1ms 20 May 2022 447th inventshah 914 91 1ms 4 Jun 2022 447th nwellnhof 🇩🇪 914 91 2ms 8 Jul 2022 First Prev 376–450 of 3,097 Next Last