Collatz 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 Lydxn 🇨🇦 1,000 82 385ms 6 May 2022 1st JayXon 🇺🇸 1,000 82 360ms 9 May 2022 3rd Irratix 🇳🇱 988 83 351ms 4 May 2022 3rd nwellnhof 🇩🇪 988 83 347ms 4 May 2022 3rd ScottHamper 988 83 338ms 5 May 2022 3rd Romain-1 🇫🇷 988 83 331ms 1 Jun 2022 3rd Gaddy 🇫🇷 988 83 365ms 1 Jun 2022 3rd 5quiwyrm 988 83 372ms 4 Sep 2022 3rd Betuaredead 988 83 357ms 5 Jan 2023 3rd Yewzir 🇧🇪 988 83 340ms 12 Feb 2023 3rd btnlq 988 83 340ms 9 Mar 2023 3rd Adix-null 🇱🇹 988 83 372ms 17 May 2023 3rd AdrienHache 🇫🇷 988 83 379ms 8 Jun 2023 3rd gblikas 988 83 448ms 23 Jul 2023 3rd KrausRaus 🇺🇸 988 83 353ms 31 Jul 2023 3rd namelessiw 988 83 374ms 9 Apr 2025 3rd dokutan 988 83 362ms 9 Apr 2025 3rd m-tkach 🇺🇦 988 83 383ms 10 Apr 2025 3rd DialFrost 🇸🇬 988 83 386ms 10 Apr 2025 3rd Pecanolith 988 83 383ms 19 Apr 2025 3rd Tyrant7 988 83 393ms 19 Apr 2025 3rd Yax42 🇫🇷 988 83 381ms 19 Apr 2025 3rd MeWhenI 🇻🇦 988 83 344ms 19 Jun 2025 3rd sean-niemann 🇺🇸 988 83 346ms 20 Jun 2025 3rd stefangimmillaro 988 83 389ms 20 Jun 2025 3rd tomh1012 988 83 451ms 28 Aug 2025 3rd fuzzylojik-golf 🇺🇸 988 83 363ms 8 Sep 2025 3rd CaedenHarper 🇨🇦 988 83 357ms 17 Oct 2025 29th roavin 976 84 337ms 23 Jun 2022 29th tkr-sh 🇰🇵 976 84 318ms 20 Aug 2022 29th Nickmiste 976 84 326ms 9 Nov 2022 29th Matgc04 976 84 347ms 19 May 2023 29th postie77 976 84 323ms 19 May 2023 29th ertz1ertz 976 84 330ms 13 Sep 2024 29th Grabnukebomb 976 84 351ms 13 Sep 2024 29th Shanethegamer 🇺🇸 976 84 365ms 9 Apr 2025 29th HumanoidCPU 976 84 392ms 10 Apr 2025 29th annaproxy 976 84 371ms 11 Apr 2025 29th Re-Adventures 🇮🇳 976 84 376ms 15 Apr 2025 29th janbehrens 🇩🇪 976 84 372ms 17 Apr 2025 29th Flix7dev 🇧🇪 976 84 384ms 21 Oct 2025 42nd arctouch-cristiannevianna 965 85 341ms 3 Apr 2023 42nd tomtheisen 🇺🇸 965 85 396ms 10 Apr 2025 44th krcs 🇵🇱 953 86 372ms 10 May 2022 44th billings7 🇬🇧 953 86 347ms 15 May 2022 44th revlayle 🇺🇸 953 86 337ms 7 Dec 2022 44th Widgitty 953 86 319ms 1 Sep 2023 44th albanian-laundromat 953 86 383ms 30 Sep 2025 49th MichalMarsalek 🇨🇿 943 87 366ms 5 May 2022 49th Kloppermand 🇩🇰 943 87 375ms 7 Oct 2022 49th bwat2 943 87 348ms 6 Apr 2023 52nd SiestaGuru 932 88 326ms 9 Jan 2023 52nd rifatx 932 88 322ms 5 Jul 2024 52nd kmathis22 932 88 367ms 25 Sep 2025 52nd arcpolaris 932 88 391ms 8 Nov 2025 56th c0d3-4-F00d 🇩🇪 921 89 370ms 5 May 2022 56th fkantelberg 921 89 340ms 15 Jul 2023 56th TRexOnGit 921 89 378ms 16 Feb 2024 59th bac0id 911 90 336ms 26 Sep 2023 59th deadp4nda 🇩🇪 911 90 372ms 26 Apr 2024 59th 123mjb 911 90 352ms 23 Jun 2025 59th michelebastione 🇮🇹 911 90 384ms 24 Aug 2025 59th razvandmtr 🇷🇴 911 90 385ms 6 Nov 2025 64th eshilo-draper 901 91 365ms 4 Sep 2022 64th ericlangedijk 🇸🇮 901 91 389ms 23 May 2023 64th KatieLG 🇬🇧 901 91 382ms 30 Apr 2024 64th Mikey-Beep 🇬🇧 901 91 341ms 3 Sep 2024 68th bschorno 891 92 366ms 12 Oct 2022 68th ChrisTheisen 891 92 339ms 14 Dec 2022 68th kellantech 891 92 363ms 4 Jul 2023 68th Mezzofloat 891 92 377ms 26 Aug 2023 68th Maximizer02 891 92 360ms 1 Oct 2023 68th madeforlosers 891 92 365ms 21 Nov 2024 68th ChromaChroma 891 92 354ms 7 Oct 2025 68th snoozingnewt 🇨🇦 891 92 379ms 8 Oct 2025 1–75 of 113 Next Last