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 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 Chars Time Submitted 672nd Steffan153 🇫🇮 752 56 1,238ms 1 Oct 2022 672nd Yewzir 🇧🇪 752 56 1,224ms 6 Dec 2023 672nd DialFrost 🇸🇬 752 56 1,335ms 10 Mar 2025 672nd sean-niemann 🇺🇸 752 56 1,264ms 18 Apr 2025 672nd CaedenHarper 🇨🇦 752 56 1,265ms 15 Jul 2025 672nd albanian-laundromat 752 56 1,231ms 9 days ago 682nd kevlened 749 66 9ms 22 Oct 2018 682nd pihart 749 66 10ms 22 Jun 2020 682nd Argeento 🇵🇱 749 66 10ms 13 Nov 2020 682nd ovs-code 🇩🇪 749 66 10ms 29 Jul 2024 686th marcin7Cd 749 77 172ms 11 Mar 2020 686th fuzzylojik-golf 🇺🇸 749 77 153ms 15 Sep 2025 688th bac0id 749 92 51ms 23 Feb 2024 688th dokutan 749 92 55ms 7 Apr 2024 690th fuzzylojik-golf 🇺🇸 747 83 433ms 30 Aug 2025 691st Yewzir 🇧🇪 747 88 342ms 2 Oct 2025 692nd DialFrost 🇸🇬 744 114 248ms 26 Dec 2024 693rd edsrzf 🇳🇿 743 88 5ms 6 days ago 694th MeWhenI 🇻🇦 741 71 2ms 22 Aug 2023 695th edsrzf 🇳🇿 741 86 40ms 30 Dec 2024 696th lynn 741 93 29ms 12 Jul 2023 696th xsot 🇸🇬 741 93 53ms 23 May 2024 698th elgan65536 740 85 122ms 22 Sep 2023 699th dan-simon 739 42 135ms 28 Dec 2017 699th yokasuretsu 739 42 125ms 27 Jun 2018 701st emgordon154 739 58 2,951ms 20 Nov 2024 701st DialFrost 🇸🇬 739 58 2,927ms 25 Dec 2024 703rd Shanethegamer 🇺🇸 739 73 309ms 12 May 2023 703rd janbehrens 🇩🇪 739 73 314ms 26 Nov 2023 705th sisyphus-ppcg 🇦🇺 739 95 8ms 14 Mar 2023 705th Lydxn 🇨🇦 739 95 7ms 14 Mar 2023 707th Steffan153 🇫🇮 739 99 2ms 28 Jan 2023 707th pardouin 🇫🇷 739 99 1ms 21 Sep 2024 707th sean-niemann 🇺🇸 739 99 1ms 9 May 2025 710th Jacob385 738 89 329ms 23 days ago 711th Frank-Buss 738 93 6ms 29 Aug 2020 712th KasperKivimaeki 🇫🇮 738 115 261ms 2 Oct 2025 713th dokutan 737 59 369ms 14 Apr 2024 714th rambox11 737 67 8ms 2 Apr 2018 714th ETHproductions 🇺🇸 737 67 10ms 14 Apr 2018 714th frobinsonj 737 67 8ms 28 Jun 2018 714th dee-gomma 737 67 9ms 27 Mar 2019 714th elisherer 🇮🇱 737 67 9ms 23 Dec 2019 714th ArmaanAS 737 67 9ms 8 Mar 2021 720th MeWhenI 🇻🇦 737 92 30ms 13 Jul 2021 721st trist224 🇫🇷 736 64 10ms 15 Nov 2022 722nd Shanethegamer 🇺🇸 733 30 3ms 13 Jan 2022 723rd MeWhenI 🇻🇦 733 76 45ms 16 May 2023 724th SirBogman 🇺🇸 731 45 201ms 7 Jan 2024 725th prplz 🇦🇺 731 86 120ms 30 Apr 2022 725th pardouin 🇫🇷 731 86 122ms 24 Aug 2024 727th treeowl 730 79 172ms 27 Feb 2019 727th user189032 730 79 184ms 29 May 2019 727th cbrt-x 730 79 165ms 15 Sep 2023 730th emplv 🇱🇻 729 93 26ms 29 Jun 2022 731st NewDefectus 🇮🇱 727 68 9ms 16 Dec 2021 732nd dokutan 727 90 2ms 12 Feb 2025 733rd Irratix 🇳🇱 726 41 2ms 1 Nov 2020 733rd primo-ppcg 🇹🇭 726 41 2ms 2 Nov 2020 733rd GrayJoKing 🇦🇺 726 41 2ms 27 Nov 2020 733rd KatieLG 🇬🇧 726 41 2ms 9 Dec 2020 733rd msbranicky 726 41 2ms 27 Jul 2023 733rd dokutan 726 41 3ms 11 Nov 2023 733rd AlephSquirrel 726 41 2ms 27 Jan 2025 740th msbranicky 725 60 394ms 17 Jan 2024 740th JunkIce 725 60 383ms 23 Feb 2025 742nd ZakkkkAttackkkk 🇵🇭 725 65 35ms 21 Dec 2021 742nd bob-th 725 65 48ms 5 Aug 2022 742nd btjones0 725 65 51ms 22 Nov 2022 742nd falsidge 725 65 9ms 21 Jun 2023 742nd snoozingnewt 🇺🇸 725 65 74ms 3 Oct 2023 742nd bizy-coder 725 65 10ms 13 Aug 2024 748th ovs-code 🇩🇪 725 95 28ms 10 Jan 2023 749th dokutan 724 75 105ms 23 Jul 2025 750th lynn 723 87 121ms 7 Jul 2024 First Prev 676–750 of 3,085 Next Last