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 595th RDShah 785 60 10ms 26 Nov 2021 595th QuincyNash 🇺🇸 785 60 9ms 30 Nov 2022 595th msbranicky 785 60 9ms 25 Jul 2023 595th Hebelub 785 60 10ms 5 Jan 2024 595th dokutan 785 60 10ms 23 Jan 2024 595th wh3n3v3r 🇨🇿 785 60 9ms 16 Nov 2024 595th JunkIce 785 60 11ms 23 Feb 2025 595th ffelixm 785 60 11ms 12 Jun 2025 595th RaBa21 🇭🇺 785 60 9ms 10 Jul 2025 595th Flekay 🇩🇪 785 60 9ms 10 Jul 2025 611th dmrichwa 🇺🇸 784 63 12ms 28 Jan 2023 611th targrik 784 63 10ms 19 Feb 2025 613th GrayJoKing 🇦🇺 784 67 5ms 31 Jan 2025 614th inventshah 783 88 51ms 27 Jan 2023 615th hemphen 782 69 366ms 28 Aug 2022 616th jslip 781 35 36ms 5 Sep 2018 616th rak1507 🇬🇧 781 35 37ms 20 Sep 2021 618th primo-ppcg 🇹🇭 779 54 1,207ms 11 May 2020 619th bforte 779 74 144ms 9 Dec 2018 619th annaproxy 779 74 152ms 12 Jan 2022 619th rak1507 🇬🇧 779 74 157ms 23 Feb 2022 619th snoozingnewt 🇺🇸 779 74 150ms 1 Sep 2024 619th Natanaelel 🇸🇪 779 74 157ms 31 May 2025 624th primo-ppcg 🇹🇭 779 87 27ms 13 Jul 2021 625th GrayJoKing 🇦🇺 777 56 424ms 23 Jul 2024 625th fuzzylojik-golf 🇺🇸 777 56 383ms 8 Aug 2025 627th bluebear94 776 40 165ms 12 Feb 2018 627th sisyphus-ppcg 🇦🇺 776 40 143ms 31 Jan 2023 629th Lydxn 🇨🇦 776 65 1ms 11 Oct 2023 630th msrawson 772 61 12ms 31 Aug 2018 631st m-tkach 🇺🇦 772 110 269ms 5 Dec 2023 632nd prplz 🇦🇺 769 75 158ms 12 Oct 2021 632nd YAJUE114514 769 75 177ms 30 Jul 2025 634th Yewzir 🇧🇪 766 90 62ms 30 Dec 2023 635th ffelixm 765 71 104ms 12 Jun 2025 636th bendiscz 765 111 267ms 20 Apr 2020 637th emgordon154 763 30 49ms 10 Sep 2025 638th lynn 763 57 380ms 17 Feb 2024 638th duckyluuk 🇳🇱 763 57 420ms 27 Mar 2024 640th primo-ppcg 🇹🇭 763 65 2ms 26 Mar 2019 641st janlelis 760 50 921ms 21 Apr 2021 642nd Waffle3z 760 62 9ms 27 Feb 2021 642nd annaproxy 760 62 9ms 11 Dec 2021 642nd KatieLG 🇬🇧 760 62 16ms 11 Dec 2022 642nd quimey 760 62 10ms 21 Mar 2023 642nd 5cw 🇺🇸 760 62 9ms 6 Jul 2024 642nd bzijlema 🇳🇱 760 62 9ms 6 May 2025 642nd 4atj 760 62 9ms 30 Jun 2025 642nd DrakeSeteraO 760 62 10ms 26 days ago 650th Unremarkable 760 65 9ms 28 Sep 2018 650th j55d 760 65 8ms 29 Sep 2018 650th ToriTheChicken 760 65 8ms 24 Jul 2020 650th thisishowmymindworks 🇳🇴 760 65 8ms 24 Jul 2020 650th Irratix 🇳🇱 760 65 9ms 27 Jul 2020 650th ehouais 760 65 9ms 24 Aug 2020 650th cywong-amino 🇭🇰 760 65 9ms 30 Sep 2020 650th sisyphus-ppcg 🇦🇺 760 65 13ms 27 Jan 2021 650th MeWhenI 🇻🇦 760 65 10ms 15 Sep 2021 650th shawphy 760 65 9ms 14 Oct 2021 650th DialFrost 🇸🇬 760 65 9ms 28 Jan 2023 650th tayloia 🇬🇧 760 65 9ms 11 May 2023 650th janbehrens 🇩🇪 760 65 9ms 26 Nov 2023 650th Yewzir 🇧🇪 760 65 9ms 6 Dec 2023 664th CheeryProgrammer 760 71 350ms 21 Nov 2021 664th fuzzylojik-golf 🇺🇸 760 71 350ms 7 Sep 2025 666th orthoplex 🇨🇽 759 36 38ms 20 Jul 2024 667th GrayJoKing 🇦🇺 757 91 29ms 28 Jan 2023 668th jiaminglimjm 🇲🇾 757 172 10ms 9 Jan 2021 669th lynn 755 93 7ms 15 Mar 2023 670th sean-niemann 🇺🇸 753 67 2ms 13 Jun 2025 671st sisyphus-ppcg 🇦🇺 752 46 13ms 21 Dec 2023 672nd lynn 752 56 1,205ms 28 May 2021 672nd prplz 🇦🇺 752 56 1,240ms 12 Oct 2021 672nd Shanethegamer 🇺🇸 752 56 1,263ms 25 Oct 2021 672nd MeWhenI 🇻🇦 752 56 1,202ms 26 Oct 2021 First Prev 601–675 of 3,086 Next Last