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 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 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 Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers 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 ><> ALGOL 68 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 ArkScript 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 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 ArkScript 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 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 Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers 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 381ms 21 Nov 2021 1st Lydxn 🇨🇦 1,000 78 395ms 21 Nov 2021 1st btnlq 1,000 78 368ms 10 Mar 2023 1st stefangimmillaro 1,000 78 382ms 15 Jul 2023 1st namelessiw 1,000 78 414ms 8 Aug 2024 6th nwellnhof 🇩🇪 987 79 394ms 21 Nov 2021 7th primo-ppcg 🇹🇭 975 80 384ms 21 Nov 2021 7th prplz 🇦🇺 975 80 377ms 21 Nov 2021 7th annaproxy 975 80 400ms 5 May 2022 7th tomtheisen 🇺🇸 975 80 376ms 17 Jan 2023 7th Steffan153 🇫🇮 975 80 443ms 28 Jan 2023 7th AdrienHache 🇫🇷 975 80 444ms 30 May 2023 7th MeWhenI 🇻🇦 975 80 414ms 26 Jul 2023 7th DialFrost 🇸🇬 975 80 410ms 26 Dec 2024 7th sean-niemann 🇺🇸 975 80 367ms 9 Jan 2025 7th Yax42 🇫🇷 975 80 440ms 15 Aug 2025 17th fuzzylojik-golf 🇺🇸 963 81 373ms 7 Sep 2025 18th Shanethegamer 🇺🇸 940 83 370ms 12 May 2023 18th janbehrens 🇩🇪 940 83 382ms 26 Nov 2023 18th Yewzir 🇧🇪 940 83 372ms 11 Feb 2024 18th snoozingnewt 🇨🇦 940 83 447ms 29 Nov 2025 22nd hemphen 929 84 409ms 28 Aug 2022 23rd ScottHamper 907 86 373ms 21 Nov 2021 23rd amazingalek 🇳🇴 907 86 499ms 27 Dec 2025 25th roavin 839 93 413ms 16 May 2022 26th billings7 🇬🇧 813 96 447ms 21 May 2024 27th CheeryProgrammer 757 103 420ms 21 Nov 2021 27th Matgc04 757 103 399ms 22 Aug 2023 27th arctouch-cristiannevianna 757 103 424ms 20 Feb 2024 27th dokutan 757 103 416ms 23 Nov 2025 31st Irratix 🇳🇱 750 104 383ms 13 Dec 2021 31st ericlangedijk 🇸🇮 750 104 453ms 17 Mar 2022 33rd kmathis22 729 107 364ms 29 Sep 2025 34th iznax 703 111 394ms 21 Nov 2021 34th Re-Adventures 🇮🇳 703 111 418ms 15 Apr 2025 36th CaedenHarper 🇨🇦 696 112 381ms 21 Oct 2025 37th tomh1012 690 113 421ms 5 Sep 2025 38th Hankinabag 672 116 393ms 21 Nov 2021 39th AdrialaD 655 119 392ms 21 Nov 2021 40th Meowsan91 🇨🇿 634 123 387ms 21 Nov 2021 41st petroselo 624 125 416ms 21 Nov 2021 41st wgloverDH 624 125 372ms 3 Oct 2023 41st GarethSpring 624 125 369ms 3 Oct 2023 41st KatieLG 🇬🇧 624 125 369ms 5 May 2024 41st HumanoidCPU 624 125 377ms 24 Aug 2024 46th Adix-null 🇱🇹 614 127 433ms 30 Jul 2023 47th daniel-skalik 🇨🇿 609 128 391ms 21 Nov 2021 47th baltermia 609 128 381ms 21 Nov 2021 47th mwarvik 🇳🇴 609 128 494ms 29 Dec 2025 50th c0d3-4-F00d 🇩🇪 600 130 412ms 21 Nov 2021 50th gpikmddk 600 130 439ms 12 Aug 2024 52nd josephdwalker 595 131 405ms 3 Oct 2023 53rd hamhub7 586 133 425ms 3 Aug 2022 54th p-vf 🇨🇭 578 135 376ms 13 Jul 2022 55th JunkIce 565 138 382ms 23 Feb 2025 56th msbranicky 557 140 421ms 28 Aug 2023 57th 0sektor0 542 144 408ms 21 Nov 2021 58th bac0id 513 152 384ms 30 Jun 2024 59th bschorno 510 153 391ms 4 Aug 2022 60th mokymok 🇺🇸 503 155 372ms 21 Nov 2021 60th muztanger 503 155 388ms 21 Nov 2021 60th retrohun 503 155 389ms 27 Dec 2022 60th rifatx 503 155 379ms 16 Jul 2024 60th Mabeloid 🇳🇴 503 155 377ms 20 Sep 2024 60th juliansiebert 🇩🇪 503 155 446ms 2 Mar 2025 66th KatieLG-Transpiler 🇬🇧 491 159 521ms 23 Jun 2022 66th ChrisTheisen 491 159 458ms 14 Dec 2022 66th zt14427 491 159 369ms 4 Mar 2023 69th aliakseikalosha 424 184 408ms 21 Nov 2021 69th jiaminglimjm 🇲🇾 424 184 392ms 21 Nov 2021 71st adlerzei 396 197 436ms 16 Jun 2022 72nd tdkkdt 🇷🇺 392 199 395ms 21 Nov 2021 73rd TRexOnGit 388 201 394ms 2 May 2025 74th PyryL 🇫🇮 333 234 453ms 15 Mar 2025 75th kevinnaviapaiva 234 333 390ms 22 Feb 2025 76th lleszczynski-PL 92 847 435ms 21 Nov 2021 1–76 of 76
