Happy Numbers 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 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 Bytes Time Submitted 1st JayXon 🇺🇸 1,000 78 317ms 21 Nov 2021 1st Lydxn 🇨🇦 1,000 78 321ms 21 Nov 2021 1st btnlq 1,000 78 367ms 10 Mar 2023 1st stefangimmillaro 1,000 78 308ms 15 Jul 2023 1st namelessiw 1,000 78 354ms 8 Aug 2024 6th nwellnhof 🇩🇪 987 79 316ms 21 Nov 2021 7th primo-ppcg 🇹🇭 975 80 310ms 21 Nov 2021 7th prplz 🇦🇺 975 80 312ms 21 Nov 2021 7th annaproxy 975 80 317ms 5 May 2022 7th tomtheisen 🇺🇸 975 80 402ms 17 Jan 2023 7th Steffan153 🇫🇮 975 80 390ms 28 Jan 2023 7th AdrienHache 🇫🇷 975 80 357ms 30 May 2023 7th MeWhenI 🇻🇦 975 80 349ms 26 Jul 2023 7th DialFrost 🇸🇬 975 80 348ms 26 Dec 2024 7th sean-niemann 🇺🇸 975 80 350ms 9 Jan 2025 7th Yax42 🇫🇷 975 80 366ms 15 Aug 2025 17th fuzzylojik-golf 🇺🇸 963 81 376ms 7 Sep 2025 18th Shanethegamer 🇺🇸 940 83 305ms 12 May 2023 18th janbehrens 🇩🇪 940 83 316ms 26 Nov 2023 18th Yewzir 🇧🇪 940 83 338ms 11 Feb 2024 18th snoozingnewt 🇨🇦 940 83 332ms 13 days ago 22nd hemphen 929 84 339ms 28 Aug 2022 23rd ScottHamper 907 86 299ms 21 Nov 2021 24th roavin 839 93 324ms 16 May 2022 25th billings7 🇬🇧 813 96 365ms 21 May 2024 26th CheeryProgrammer 757 103 344ms 21 Nov 2021 26th Matgc04 757 103 339ms 22 Aug 2023 26th arctouch-cristiannevianna 757 103 365ms 20 Feb 2024 26th dokutan 757 103 388ms 18 days ago 30th Irratix 🇳🇱 750 104 339ms 13 Dec 2021 30th ericlangedijk 🇸🇮 750 104 365ms 17 Mar 2022 32nd kmathis22 729 107 326ms 29 Sep 2025 33rd iznax 703 111 338ms 21 Nov 2021 33rd Re-Adventures 🇮🇳 703 111 366ms 15 Apr 2025 35th CaedenHarper 🇨🇦 696 112 351ms 21 Oct 2025 36th tomh1012 690 113 397ms 5 Sep 2025 37th Hankinabag 672 116 352ms 21 Nov 2021 38th AdrialaD 655 119 328ms 21 Nov 2021 39th Meowsan91 🇨🇿 634 123 363ms 21 Nov 2021 40th petroselo 624 125 306ms 21 Nov 2021 40th wgloverDH 624 125 306ms 3 Oct 2023 40th GarethSpring 624 125 312ms 3 Oct 2023 40th KatieLG 🇬🇧 624 125 362ms 5 May 2024 40th HumanoidCPU 624 125 356ms 24 Aug 2024 45th Adix-null 🇱🇹 614 127 412ms 30 Jul 2023 46th daniel-skalik 🇨🇿 609 128 331ms 21 Nov 2021 46th baltermia 609 128 326ms 21 Nov 2021 48th c0d3-4-F00d 🇩🇪 600 130 324ms 21 Nov 2021 48th gpikmddk 600 130 410ms 12 Aug 2024 50th josephdwalker 595 131 324ms 3 Oct 2023 51st hamhub7 586 133 349ms 3 Aug 2022 52nd p-vf 🇨🇭 578 135 342ms 13 Jul 2022 53rd JunkIce 565 138 331ms 23 Feb 2025 54th msbranicky 557 140 326ms 28 Aug 2023 55th 0sektor0 542 144 321ms 21 Nov 2021 56th bac0id 513 152 366ms 30 Jun 2024 57th bschorno 510 153 323ms 4 Aug 2022 58th mokymok 🇺🇸 503 155 319ms 21 Nov 2021 58th muztanger 503 155 353ms 21 Nov 2021 58th retrohun 503 155 312ms 27 Dec 2022 58th rifatx 503 155 337ms 16 Jul 2024 58th Mabeloid 🇳🇴 503 155 352ms 20 Sep 2024 58th juliansiebert 🇩🇪 503 155 367ms 2 Mar 2025 64th KatieLG-Transpiler 🇬🇧 491 159 351ms 23 Jun 2022 64th ChrisTheisen 491 159 365ms 14 Dec 2022 64th zt14427 491 159 306ms 4 Mar 2023 67th aliakseikalosha 424 184 359ms 21 Nov 2021 67th jiaminglimjm 🇲🇾 424 184 311ms 21 Nov 2021 69th adlerzei 396 197 342ms 16 Jun 2022 70th tdkkdt 🇷🇺 392 199 326ms 21 Nov 2021 71st TRexOnGit 388 201 391ms 2 May 2025 72nd PyryL 🇫🇮 333 234 351ms 15 Mar 2025 73rd kevinnaviapaiva 234 333 341ms 22 Feb 2025 74th lleszczynski-PL 92 847 365ms 21 Nov 2021 1–74 of 74
