The Calendar hole will go live in approximately 6 days. Why not try and solve it ahead of time?
Happy Numbers in all languages in chars. Achievements Cheevos Holes Languages Medals Miscellaneous 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 Tower of Hanoi 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 Multitap Input NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang 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 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 Erlang 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 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 Tower of Hanoi 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 Multitap Input NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 721st fuzzylojik-golf 🇺🇸 747 83 433ms 30 Aug 2025 722nd Yewzir 🇧🇪 747 88 386ms 2 Oct 2025 723rd DialFrost 🇸🇬 744 114 294ms 26 Dec 2024 723rd snoozingnewt 🇨🇦 744 114 264ms 26 days ago 725th edsrzf 🇳🇿 743 88 4ms 14 Nov 2025 726th MeWhenI 🇻🇦 741 71 2ms 22 Aug 2023 727th edsrzf 🇳🇿 741 86 42ms 30 Dec 2024 728th lynn 741 93 27ms 12 Jul 2023 728th xsot 🇸🇬 741 93 57ms 23 May 2024 730th elgan65536 740 85 117ms 22 Sep 2023 731st Steffan153 🇫🇮 740 99 1ms 28 Jan 2023 731st pardouin 🇫🇷 740 99 1ms 21 Sep 2024 731st sean-niemann 🇺🇸 740 99 1ms 9 May 2025 734th dan-simon 739 42 147ms 28 Dec 2017 734th yokasuretsu 739 42 124ms 27 Jun 2018 736th emgordon154 739 58 3,016ms 20 Nov 2024 736th DialFrost 🇸🇬 739 58 3,081ms 25 Dec 2024 738th Shanethegamer 🇺🇸 739 73 305ms 12 May 2023 738th janbehrens 🇩🇪 739 73 316ms 26 Nov 2023 740th Jacob385 739 89 431ms 27 Oct 2025 741st sisyphus-ppcg 🇦🇺 739 95 7ms 14 Mar 2023 741st Lydxn 🇨🇦 739 95 7ms 14 Mar 2023 743rd rambox11 738 67 9ms 2 Apr 2018 743rd ETHproductions 🇺🇸 738 67 10ms 14 Apr 2018 743rd frobinsonj 738 67 9ms 28 Jun 2018 743rd dee-gomma 738 67 9ms 27 Mar 2019 743rd elisherer 🇮🇱 738 67 8ms 23 Dec 2019 743rd ArmaanAS 738 67 9ms 8 Mar 2021 749th Frank-Buss 738 93 5ms 29 Aug 2020 750th KasperKivimaeki 🇫🇮 738 115 263ms 2 Oct 2025 751st dokutan 737 59 339ms 14 Apr 2024 752nd MeWhenI 🇻🇦 737 92 24ms 13 Jul 2021 753rd trist224 🇫🇷 736 64 9ms 15 Nov 2022 754th Shanethegamer 🇺🇸 733 30 3ms 13 Jan 2022 755th MeWhenI 🇻🇦 733 76 37ms 16 May 2023 756th SirBogman 🇺🇸 731 45 205ms 7 Jan 2024 757th prplz 🇦🇺 731 86 119ms 30 Apr 2022 757th pardouin 🇫🇷 731 86 120ms 24 Aug 2024 759th treeowl 730 79 135ms 27 Feb 2019 759th user189032 730 79 136ms 29 May 2019 759th cbrt-x 730 79 137ms 15 Sep 2023 762nd emplv 🇱🇻 729 93 25ms 29 Jun 2022 763rd NewDefectus 🇮🇱 727 68 9ms 16 Dec 2021 764th albanian-laundromat 727 84 94ms 3 days ago 765th dokutan 727 90 3ms 12 Feb 2025 766th Irratix 🇳🇱 726 41 3ms 1 Nov 2020 766th primo-ppcg 🇹🇭 726 41 1ms 2 Nov 2020 766th GrayJoKing 🇦🇺 726 41 2ms 27 Nov 2020 766th KatieLG 🇬🇧 726 41 2ms 9 Dec 2020 766th msbranicky 726 41 1ms 27 Jul 2023 766th dokutan 726 41 2ms 11 Nov 2023 766th AlephSquirrel 726 41 2ms 27 Jan 2025 773rd msbranicky 725 60 402ms 17 Jan 2024 773rd JunkIce 725 60 363ms 23 Feb 2025 775th ZakkkkAttackkkk 🇵🇭 725 65 32ms 21 Dec 2021 775th bob-th 725 65 45ms 5 Aug 2022 775th btjones0 725 65 52ms 22 Nov 2022 775th falsidge 725 65 9ms 21 Jun 2023 779th ovs-code 🇩🇪 725 95 26ms 10 Jan 2023 780th dokutan 724 75 101ms 23 Jul 2025 781st lynn 723 87 118ms 7 Jul 2024 781st emgordon154 723 87 118ms 18 Feb 2025 781st edsrzf 🇳🇿 723 87 120ms 4 Mar 2025 781st DialFrost 🇸🇬 723 87 120ms 4 Apr 2025 781st acotis 723 87 113ms 15 Apr 2025 781st ovs-code 🇩🇪 723 87 121ms 20 Apr 2025 781st sean-niemann 🇺🇸 723 87 123ms 6 Jun 2025 781st kumavale 723 87 116ms 17 Aug 2025 789th dokutan 723 91 500ms 24 Sep 2025 790th phdphil 722 43 146ms 9 Apr 2018 791st edsrzf 🇳🇿 722 54 614ms 8 Sep 2025 792nd RussellEmerine 721 80 138ms 30 Nov 2019 792nd iczelia 🇩🇪 721 80 159ms 20 Oct 2025 794th duckyluuk 🇳🇱 720 73 4ms 16 Dec 2024 795th yzhs 🇩🇪 719 38 35ms 21 Jun 2022 796th retrohun 719 69 8ms 3 Nov 2024 797th GrayJoKing 🇦🇺 717 53 1,018ms 13 Sep 2021 797th primo-ppcg 🇹🇭 717 53 1,005ms 22 Sep 2021 799th jakzo 716 69 14ms 5 Sep 2021 799th 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