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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 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 Dragon Curve Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Nim 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 Dragon Curve Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Nim 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 201st Azearia 650 100 2ms 6 Jul 2023 202nd Sephirem98 637 102 2ms 25 Oct 2023 202nd ottav14 637 102 2ms 1 Dec 2025 204th galloj 🇨🇿 631 103 2ms 20 May 2023 204th Pyro569 631 103 2ms 28 Jul 2023 206th TornadoCookie 607 107 2ms 17 Oct 2022 206th aarooosh 607 107 2ms 8 Aug 2024 208th dillon-duncando 602 108 2ms 22 Sep 2022 208th blaztoma 🇱🇹 602 108 2ms 18 Nov 2025 210th masflam 596 109 2ms 21 Jun 2024 211th tweska 🇳🇱 591 110 2ms 5 Jun 2023 211th Jaro32768 🇸🇰 591 110 2ms 8 Feb 2024 211th 0xA00 591 110 2ms 3 Dec 2025 214th michztl01 586 111 2ms 1 Jun 2022 215th kenballus 580 112 2ms 13 Jul 2022 215th nandanjp 580 112 2ms 29 Mar 2023 215th CyberTapir 580 112 2ms 27 Aug 2024 218th Giantnoodlemonster 575 113 2ms 14 Sep 2024 219th pinguicula 570 114 2ms 6 Apr 2023 219th fkantelberg 570 114 2ms 15 Jul 2023 219th Blockyheadman 570 114 2ms 6 Nov 2025 219th historicattle 570 114 3ms 39 hours ago 223rd TerenceTux 565 115 2ms 22 May 2023 224th tik25 556 117 2ms 28 Mar 2024 225th 104210 542 120 2ms 29 Jul 2022 226th Qruintrox 537 121 2ms 25 Jun 2023 227th aDwarfNamedUrist 533 122 2ms 12 Jul 2023 227th Alex-Huggett 🇬🇧 533 122 2ms 14 Apr 2024 229th cgjohannsen 528 123 2ms 12 Jun 2022 230th TotoAJ 520 125 2ms 15 Dec 2023 230th mrmena 🇦🇺 520 125 2ms 19 Mar 2024 232nd StronkCheese 🇺🇸 516 126 2ms 18 Feb 2023 233rd MEarley 504 129 2ms 19 Sep 2023 234th wearsunscreen 489 133 2ms 19 Oct 2023 235th 4ndyJ 🇬🇧 485 134 2ms 16 Dec 2022 235th programmeruser2 485 134 2ms 3 Mar 2023 237th AstroOrbis 471 138 3ms 10 Jul 2025 238th julianreece 468 139 2ms 29 Apr 2025 239th 42-Slices-of-Cheese 461 141 2ms 6 days ago 240th myclevorname 🇺🇸 448 145 2ms 20 Aug 2023 241st Bodo171 445 146 2ms 6 Dec 2022 242nd jameswmccarty 439 148 2ms 24 Sep 2024 243rd craftablescience 417 156 2ms 19 Sep 2023 244th NOS4A5I 411 158 2ms 30 Dec 2022 245th calum12345 396 164 2ms 27 Mar 2025 246th george1605 342 190 3ms 14 Feb 2023 247th kevinnaviapaiva 322 202 3ms 20 Feb 2025 248th taha-daneshmand 188 345 2ms 2 Oct 2024 249th MaNafromSaar 169 384 2ms 14 Nov 2023 250th somT-oss 150 432 2ms 26 Nov 2024 251st Haksell 🇦🇶 20 3,242 1ms 28 Feb 2023 252nd KatieLG-Transpiler 🇬🇧 15 4,245 1ms 23 Jun 2022 253rd KatieLG 🇬🇧 15 4,248 1ms 4 May 2022 254th jusaka 15 4,267 3ms 17 days ago First Prev 201–254 of 254
