Collatz in all languages 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 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 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 69th tayloia 🇬🇧 956 56 13ms 10 Jul 2023 69th Argeento 🇵🇱 956 56 13ms 25 Aug 2023 69th weliveinhell 🇭🇹 956 56 12ms 2 Oct 2023 69th coreynash 956 56 12ms 6 Oct 2023 69th dylanarmstrong 956 56 12ms 10 Dec 2023 69th two-bad 🇬🇧 956 56 12ms 23 Feb 2024 69th mehbark 956 56 13ms 27 Jul 2024 69th madeforlosers 956 56 15ms 4 Nov 2024 69th XenThe 🇬🇧 956 56 11ms 6 Jun 2025 69th Tristanchaang 956 56 12ms 13 Nov 2025 69th Lv0Sys 🇵🇱 956 56 12ms 27 Feb 2026 69th edsrzf 🇳🇿 956 56 11ms 9 Mar 2026 69th DayDun 🇸🇪 956 56 11ms 19 days ago 94th Lydxn 🇨🇦 955 89 61ms 6 May 2022 94th JayXon 🇺🇸 955 89 63ms 7 May 2022 94th nwellnhof 🇩🇪 955 89 58ms 5 Jun 2022 94th snyderek 🇺🇸 955 89 60ms 19 Feb 2025 98th 2bular 952 32 27ms 17 Oct 2024 99th ovs-code 🇩🇪 951 61 248ms 5 Aug 2024 100th Lydxn 🇨🇦 951 82 432ms 6 May 2022 100th JayXon 🇺🇸 951 82 465ms 9 May 2022 102nd Lydxn 🇨🇦 949 55 765ms 16 Jan 2024 102nd ovs-code 🇩🇪 949 55 838ms 16 Jan 2024 102nd Steffan153 🇫🇮 949 55 529ms 16 Jan 2024 102nd kg583 🇺🇸 949 55 455ms 16 Feb 2024 102nd Shanethegamer 🇺🇸 949 55 440ms 24 Mar 2024 102nd pardouin 🇫🇷 949 55 484ms 30 Jun 2024 102nd JayXon 🇺🇸 949 55 469ms 17 Aug 2024 102nd sean-niemann 🇺🇸 949 55 466ms 24 Jan 2025 110th Lydxn 🇨🇦 949 59 10ms 6 May 2022 111th primo-ppcg 🇹🇭 948 49 7ms 5 May 2022 111th Lydxn 🇨🇦 948 49 6ms 8 May 2022 113th JayXon 🇺🇸 948 88 470ms 24 Sep 2025 113th Lydxn 🇨🇦 948 88 480ms 12 Dec 2025 115th lyphyser 947 46 55ms 13 Jan 2024 115th AdrienHache 🇫🇷 947 46 58ms 9 Apr 2024 117th saito-ta 🇯🇵 946 49 63ms 13 May 2022 117th Lydxn 🇨🇦 946 49 66ms 28 May 2022 117th Steffan153 🇫🇮 946 49 66ms 25 days ago 120th JayXon 🇺🇸 946 88 128ms 17 Oct 2022 120th acotis 946 88 125ms 9 Jun 2025 120th kumavale 946 88 134ms 7 Oct 2025 123rd canissimia 🇦🇶 942 50 42ms 5 May 2022 123rd ovs-code 🇩🇪 942 50 245ms 7 May 2022 123rd sisyphus-ppcg 🇦🇺 942 50 50ms 20 Feb 2023 123rd Steffan153 🇫🇮 942 50 44ms 20 Jul 2024 123rd sean-niemann 🇺🇸 942 50 42ms 9 Jun 2025 123rd pardouin 🇫🇷 942 50 43ms 22 Aug 2025 129th canissimia 🇦🇶 942 51 1,347ms 6 May 2022 129th Lydxn 🇨🇦 942 51 1,359ms 6 May 2022 129th primo-ppcg 🇹🇭 942 51 1,435ms 6 May 2022 129th pardouin 🇫🇷 942 51 1,380ms 12 Apr 2025 133rd primo-ppcg 🇹🇭 941 58 4ms 13 Nov 2022 133rd clockworknazo 941 58 5ms 15 Nov 2022 133rd Lydxn 🇨🇦 941 58 5ms 7 Feb 2023 133rd xsot 🇸🇬 941 58 5ms 28 Jun 2024 133rd Salutations45 941 58 5ms 18 Dec 2024 133rd canissimia 🇦🇶 941 58 5ms 12 Dec 2025 139th GolfingSuccess 🇬🇷 940 49 38ms 12 Aug 2024 139th Shanethegamer 🇺🇸 940 49 39ms 12 Aug 2024 139th Steffan153 🇫🇮 940 49 39ms 12 Aug 2024 139th MeWhenI 🇻🇦 940 49 37ms 13 Aug 2024 139th DialFrost 🇸🇬 940 49 38ms 13 Aug 2024 139th GrayJoKing 🇦🇺 940 49 41ms 15 Aug 2024 139th btnlq 940 49 39ms 16 Aug 2024 139th emgordon154 940 49 41ms 19 Aug 2024 139th ovs-code 🇩🇪 940 49 39ms 19 Aug 2024 139th mousetail 🇳🇱 940 49 39ms 13 Sep 2024 139th lynn 940 49 39ms 20 Dec 2024 139th weeble 940 49 39ms 20 Dec 2024 139th sean-niemann 🇺🇸 940 49 39ms 11 Jan 2025 139th DayDun 🇸🇪 940 49 39ms 7 days ago 153rd inventshah 939 57 15ms 4 May 2022 153rd itsh01 939 57 12ms 17 May 2022 153rd Natanaelel 🇸🇪 939 57 14ms 16 Jun 2022 153rd Attero 🇸🇪 939 57 12ms 3 Aug 2022 153rd SirFireball3521 939 57 13ms 26 Jan 2023 153rd Kacarott 🇦🇺 939 57 12ms 24 Mar 2023 153rd nathanadams 🇳🇿 939 57 13ms 24 Apr 2023 153rd hacker112 🇸🇪 939 57 18ms 20 Jun 2024 First Prev 81–160 of 3,777 Next Last