The Calendar hole will go live in approximately 13 days. Why not try and solve it ahead of time?
Happy Numbers in Python 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 479th rowboat1 414 116 10ms 21 Jun 2022 479th AGoyet 414 116 40ms 29 Jun 2022 483rd tomh1012 410 117 10ms 30 Oct 2020 483rd madeforlosers 410 117 16ms 7 Nov 2025 485th caerbannogwhite 407 118 17ms 13 Apr 2018 485th danwley 407 118 10ms 2 Apr 2019 485th siegelzero 407 118 14ms 24 Jan 2020 485th mothcolada 🇺🇸 407 118 10ms 4 Dec 2020 485th lukehatcher 🇺🇸 407 118 16ms 30 Aug 2021 485th midnattssol 🇸🇪 407 118 11ms 27 Jul 2023 485th JesseNoEyes 🇺🇸 407 118 10ms 25 Sep 2024 492nd dddthedark 403 119 9ms 11 Jan 2018 492nd raywinray 403 119 11ms 27 Sep 2018 492nd alangodfrey 403 119 10ms 11 Jun 2019 492nd ElevatorShaft 403 119 9ms 18 Jun 2019 492nd iso4096 403 119 9ms 8 Mar 2020 492nd Andre3582 403 119 9ms 25 Oct 2020 492nd enbyte 403 119 9ms 27 May 2021 492nd Hannah-Varekamp 403 119 10ms 17 Jun 2021 492nd StarmaQ 403 119 9ms 12 Jan 2022 492nd Trunksistor 🇫🇷 403 119 17ms 19 Apr 2022 492nd Puperger 403 119 9ms 19 Jun 2022 492nd jhpaques 🇫🇷 403 119 9ms 29 Jul 2022 492nd kevdah 403 119 10ms 2 Aug 2022 492nd bwenstar 403 119 11ms 9 Aug 2022 492nd mdnestor 403 119 10ms 28 Dec 2022 492nd mbittner20 403 119 11ms 27 May 2023 492nd therealnumbers 403 119 10ms 4 Jun 2024 492nd RedzGoose 🇦🇺 403 119 9ms 25 Oct 2024 492nd mishak-sys 403 119 9ms 31 Mar 2025 492nd damoose717 403 119 13ms 23 May 2025 492nd WillowWispy 403 119 17ms 25 May 2025 492nd SectorCorruptor 403 119 10ms 25 Jul 2025 514th jaredcrystal 🇺🇸 400 120 16ms 17 Mar 2018 514th BenBanerjeeRichards 400 120 10ms 20 Jan 2022 516th johnnythedoggie 397 121 24ms 26 Apr 2021 516th brimstonetrader 397 121 9ms 22 Jan 2024 518th babulibaba 393 122 9ms 30 Aug 2019 518th AreYouW 393 122 9ms 6 Dec 2019 518th Hawkeye99 393 122 9ms 6 Dec 2019 518th ADV1K 🇮🇳 393 122 9ms 18 Feb 2020 518th garrisonhh 393 122 17ms 21 Nov 2020 518th Command-Crafter 393 122 9ms 8 Nov 2021 518th Demonarchet 393 122 9ms 2 May 2023 518th 0dyse 393 122 10ms 29 Apr 2025 518th osNiko 🇧🇷 393 122 10ms 23 Jul 2025 527th lukasmoellerch 390 123 10ms 14 Jan 2019 527th Kreavita 390 123 10ms 14 Jan 2019 527th timkaiser 390 123 10ms 19 Apr 2019 527th bobbysq 390 123 11ms 29 Jun 2023 531st KarachunIvan 387 124 10ms 19 Feb 2018 531st sleepyStick 387 124 16ms 11 Mar 2022 533rd lmeuser 384 125 10ms 2 Dec 2017 533rd 0xCake 384 125 17ms 20 Apr 2020 533rd haydenridd 384 125 10ms 20 Oct 2020 533rd markbyrne 384 125 10ms 20 Oct 2020 533rd samchristiandd 384 125 11ms 19 Feb 2021 533rd clementblaudeau 384 125 9ms 26 May 2021 533rd brochmann 🇸🇪 384 125 9ms 6 Feb 2022 533rd AliceFord 384 125 9ms 2 Jun 2022 533rd elephantpanda 384 125 9ms 31 Aug 2022 533rd Azearia 384 125 9ms 1 Dec 2022 533rd Schreipfelerer 384 125 9ms 9 Apr 2023 533rd eddvrs 384 125 10ms 21 Dec 2023 533rd qwjhvbxi 384 125 11ms 8 Feb 2024 533rd Pale-Vessel 384 125 9ms 1 Apr 2024 533rd hippopotam00sehead 🇨🇦 384 125 9ms 13 Sep 2024 533rd TralfamadorianComedian 384 125 9ms 31 Dec 2024 533rd TheZwierzLF 🇵🇱 384 125 30ms 25 May 2025 550th rschwa6308 🇺🇸 381 126 17ms 6 Aug 2020 550th jackedwards04 381 126 9ms 22 Nov 2020 550th b4dpxl 381 126 16ms 10 Nov 2021 550th jettdc 381 126 9ms 31 Dec 2022 550th jstechman 381 126 10ms 9 Mar 2024 555th usnheckler 378 127 64ms 7 Jun 2019 555th derekthatcher 378 127 16ms 25 Sep 2020 555th bastienvoirin 🇫🇷 378 127 16ms 28 Nov 2020 555th Evan-Robotics 378 127 16ms 26 Jan 2022 555th gareth-kmet 378 127 16ms 2 Mar 2023 560th petar-donchev 375 128 10ms 8 Sep 2019 First Prev 481–560 of 701 Next Last
