Happy Numbers (Long) in C# in bytes. 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 Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Multitap Input 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 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript 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 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> ALGOL 68 ArkScript 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 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily 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 Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Multitap Input 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 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 1st Lydxn 🇨🇦 1,000 83 419ms 25 Apr 2022 1st JayXon 🇺🇸 1,000 83 427ms 25 Apr 2022 1st tomtheisen 🇺🇸 1,000 83 392ms 9 Feb 2023 1st nwellnhof 🇩🇪 1,000 83 427ms 2 Mar 2023 1st btnlq 1,000 83 430ms 2 Mar 2023 1st Steffan153 🇫🇮 1,000 83 413ms 5 Mar 2023 1st sean-niemann 🇺🇸 1,000 83 430ms 16 May 2024 8th MeWhenI 🇻🇦 943 88 416ms 16 Aug 2023 8th stefangimmillaro 943 88 415ms 18 Sep 2023 8th namelessiw 943 88 399ms 9 Jun 2024 11th DialFrost 🇸🇬 933 89 428ms 16 Nov 2025 12th AdrienHache 🇫🇷 883 94 403ms 2 Jun 2023 13th Shanethegamer 🇺🇸 856 97 421ms 20 Jun 2022 13th billings7 🇬🇧 856 97 423ms 21 May 2024 13th Yax42 🇫🇷 856 97 437ms 7 Jan 2026 16th Yewzir 🇧🇪 814 102 366ms 13 Jan 2024 17th dokutan 806 103 387ms 23 Nov 2025 18th primo-ppcg 🇹🇭 798 104 391ms 21 Nov 2021 18th Irratix 🇳🇱 798 104 385ms 13 Dec 2021 18th ericlangedijk 🇸🇮 798 104 444ms 17 Mar 2022 18th Matgc04 798 104 362ms 22 Aug 2023 18th CaedenHarper 🇨🇦 798 104 381ms 5 Nov 2025 23rd arctouch-cristiannevianna 790 105 405ms 26 May 2023 23rd annaproxy 790 105 422ms 11 Apr 2025 25th janbehrens 🇩🇪 761 109 389ms 21 Nov 2021 26th Re-Adventures 🇮🇳 748 111 374ms 15 Apr 2025 27th snoozingnewt 🇨🇦 716 116 418ms 4 Oct 2025 28th Adix-null 🇱🇹 648 128 433ms 30 Jul 2023 29th michelebastione 🇮🇹 643 129 426ms 10 hours ago 30th KatieLG 🇬🇧 638 130 428ms 21 Oct 2022 31st c0d3-4-F00d 🇩🇪 634 131 371ms 21 Nov 2021 32nd hamhub7 619 134 392ms 3 Aug 2022 33rd flekAI 601 138 405ms 21 hours ago 34th msbranicky 589 141 355ms 28 Aug 2023 35th tomh1012 572 145 438ms 11 Dec 2025 36th rifatx 532 156 372ms 16 Jul 2024 37th ChrisTheisen 519 160 437ms 19 Dec 2022 38th bac0id 485 171 402ms 30 Jun 2024 39th weliveinhell 🇭🇹 480 173 392ms 23 Sep 2023 40th aliakseikalosha 449 185 372ms 21 Nov 2021 41st HumanoidCPU 342 243 385ms 23 Jun 2024 42nd amazingalek 🇳🇴 260 319 376ms 6 Jan 2026 43rd kevinnaviapaiva 249 334 395ms 22 Feb 2025 44th mwarvik 🇳🇴 146 570 366ms 5 Jan 2026 45th jusaka 145 571 513ms 3 days ago 46th retrohun 117 711 360ms 27 Dec 2022 46th Mabeloid 🇳🇴 117 711 374ms 18 Sep 2024 48th KatieLG-Transpiler 🇬🇧 116 715 378ms 23 Jun 2022 1–48 of 48
