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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 94th Us1ngTh3Hub 823 79 2ms 8 Jul 2023 94th Widgitty 823 79 2ms 30 Aug 2023 94th Grrisly 823 79 2ms 10 Nov 2023 94th trist224 🇫🇷 823 79 2ms 14 Feb 2024 94th mathisfun271 823 79 2ms 19 Feb 2024 94th retrohun 823 79 2ms 29 Mar 2024 94th HumanoidCPU 823 79 2ms 6 May 2024 94th funnyboy-roks 823 79 2ms 14 Jun 2024 94th csharpython 823 79 2ms 5 Aug 2025 94th iczelia 🇩🇪 823 79 2ms 16 Oct 2025 94th luuumine 🇫🇷 823 79 2ms 28 Oct 2025 94th warmCabin 823 79 2ms 31 Dec 2025 94th brian124634 823 79 2ms 27 days ago 94th solisolu 823 79 3ms 22 days ago 115th Seek64 🇩🇪 813 80 2ms 11 Nov 2022 115th tvcv901 813 80 2ms 22 Mar 2023 115th kyleclaassen 813 80 2ms 20 May 2023 115th logvp 813 80 2ms 1 Feb 2024 115th ei14 813 80 2ms 9 May 2024 115th elttil 813 80 2ms 8 Jun 2024 115th bac0id 813 80 2ms 29 Jun 2024 115th gastropner 813 80 2ms 14 Jul 2025 115th yoikolover 813 80 2ms 11 Dec 2025 115th matricronia 813 80 2ms 27 Jan 2026 115th ComradeSquirrel 813 80 3ms 6 days ago 126th MinorLegato 🇸🇪 802 81 2ms 9 May 2022 126th slerpyyy 🇩🇪 802 81 2ms 21 Oct 2022 126th violeta-desantis 802 81 2ms 22 Sep 2023 126th SebastianoTaddei 802 81 2ms 4 Oct 2024 130th Ripick 793 82 2ms 10 Nov 2022 130th pandapawskat 793 82 2ms 13 Jan 2023 130th annoj 793 82 2ms 18 Jan 2023 130th CatsAreFluffy 793 82 2ms 18 Feb 2023 130th nyoshe 793 82 2ms 9 Dec 2023 130th NickTheEASDude 🇺🇸 793 82 2ms 26 Jan 2024 130th LHLaurini 🇧🇷 793 82 2ms 26 Jun 2024 130th lgrandco 793 82 2ms 9 Oct 2024 130th Maashau 793 82 2ms 29 Nov 2025 130th axvonx 793 82 2ms 12 Jan 2026 140th Anonymousellama21 783 83 2ms 15 Jun 2022 140th cmayer777 783 83 2ms 15 Oct 2022 140th nstearns96 🇬🇧 783 83 2ms 16 Nov 2022 140th osmith93 783 83 2ms 13 Dec 2022 140th mhgockel 783 83 2ms 15 Apr 2023 140th funnsam 🇭🇰 783 83 2ms 25 Jul 2023 140th mousetail 🇳🇱 783 83 2ms 10 May 2024 147th guilhem-roy 🇫🇷 774 84 2ms 5 May 2022 147th resetcentral 774 84 2ms 22 May 2022 147th Adrien-AM 774 84 2ms 12 Sep 2022 147th ibrahimhanifceker 774 84 2ms 9 Aug 2024 147th James-Oswald 🇺🇸 774 84 2ms 23 Aug 2024 147th h-hh-hhh 🇺🇦 774 84 2ms 6 Nov 2024 147th kellantech 774 84 2ms 16 Dec 2025 147th Zuzu31 774 84 2ms 24 Jan 2026 155th ms-tingliang 765 85 2ms 5 Aug 2022 155th aubergine-sauce 765 85 2ms 26 May 2023 155th kallmi28 🇨🇿 765 85 2ms 13 Nov 2023 155th azka1368 765 85 2ms 23 Nov 2023 155th iilegacyyii 765 85 2ms 22 Jan 2024 155th f-tucker 765 85 2ms 6 Feb 2024 155th Stockoh 🇫🇷 765 85 2ms 29 Sep 2024 162nd garrisonhh 756 86 2ms 22 Oct 2022 162nd tpasfieldERAU 756 86 2ms 5 Nov 2022 162nd piano-miles 756 86 2ms 30 Mar 2023 162nd JOrE20 756 86 2ms 15 Feb 2026 166th razetime 747 87 2ms 22 Aug 2022 166th Shengxuan-Zhang 747 87 2ms 20 Feb 2026 166th zgialor-lab 747 87 3ms 12 days ago 169th james-downey 739 88 2ms 9 Jul 2022 169th jhpaques 🇫🇷 739 88 2ms 4 Dec 2022 169th mamalakic 739 88 2ms 1 Mar 2023 169th xnacly 🇩🇪 739 88 2ms 5 Jul 2023 169th KrausRaus 🇺🇸 739 88 2ms 31 Jul 2023 169th dranjohn 739 88 2ms 17 Sep 2023 169th roguh 🇬🇹 739 88 2ms 15 Jan 2024 169th northsuperman 739 88 2ms 24 Mar 2024 177th RealAMC 🇳🇿 730 89 2ms 15 Nov 2023 177th mathb0y512 730 89 2ms 25 Jun 2024 177th Mabeloid 🇳🇴 730 89 2ms 25 Sep 2024 177th Vexxter9 🇳🇱 730 89 2ms 29 Jan 2026 181st Starwort 🇬🇧 722 90 2ms 11 Nov 2022 182nd astdefu 714 91 2ms 10 Dec 2022 182nd msbranicky 714 91 2ms 9 Jan 2024 184th esseeffeenne 707 92 2ms 6 Jun 2022 184th MaxElf999 707 92 2ms 5 Feb 2023 184th ComputerKWasTaken 🇺🇸 707 92 2ms 20 Jan 2025 184th matejmatik123 🇸🇰 707 92 2ms 6 Jul 2025 188th LawrenceZ1A 🇨🇦 699 93 2ms 25 May 2022 188th jaxmattfair 🇺🇸 699 93 2ms 10 Jan 2023 188th Maximizer02 699 93 2ms 7 May 2024 188th 0dyse 699 93 2ms 23 Apr 2025 192nd Smetalo 691 94 2ms 25 Aug 2022 192nd evan18c 691 94 2ms 12 Dec 2023 192nd kasarino 691 94 2ms 17 Mar 2026 195th Andrey2001 684 95 2ms 27 Nov 2025 196th kmathis22 677 96 2ms 25 Sep 2025 197th NeatCrown 🇨🇦 670 97 2ms 14 Dec 2022 198th calinous 🇷🇴 663 98 2ms 2 Mar 2023 198th jtaxen 663 98 2ms 14 Apr 2024 200th 6512345 657 99 2ms 8 Nov 2025 First Prev 101–200 of 253 Next Last