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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 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 101st ovs-code 🇩🇪 950 61 248ms 5 Aug 2024 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 946 46 55ms 13 Jan 2024 115th AdrienHache 🇫🇷 946 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 27 days ago 120th JayXon 🇺🇸 945 88 128ms 17 Oct 2022 120th acotis 945 88 125ms 9 Jun 2025 120th kumavale 945 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 🇦🇶 941 51 1,347ms 6 May 2022 129th Lydxn 🇨🇦 941 51 1,359ms 6 May 2022 129th primo-ppcg 🇹🇭 941 51 1,435ms 6 May 2022 129th pardouin 🇫🇷 941 51 1,380ms 12 Apr 2025 133rd primo-ppcg 🇹🇭 940 58 4ms 13 Nov 2022 133rd clockworknazo 940 58 5ms 15 Nov 2022 133rd Lydxn 🇨🇦 940 58 5ms 7 Feb 2023 133rd xsot 🇸🇬 940 58 5ms 28 Jun 2024 133rd Salutations45 940 58 5ms 18 Dec 2024 133rd canissimia 🇦🇶 940 58 5ms 12 Dec 2025 139th GolfingSuccess 🇬🇷 939 49 38ms 12 Aug 2024 139th Shanethegamer 🇺🇸 939 49 39ms 12 Aug 2024 139th Steffan153 🇫🇮 939 49 39ms 12 Aug 2024 139th MeWhenI 🇻🇦 939 49 37ms 13 Aug 2024 139th DialFrost 🇸🇬 939 49 38ms 13 Aug 2024 139th GrayJoKing 🇦🇺 939 49 41ms 15 Aug 2024 139th btnlq 939 49 39ms 16 Aug 2024 139th emgordon154 939 49 41ms 19 Aug 2024 139th ovs-code 🇩🇪 939 49 39ms 19 Aug 2024 139th mousetail 🇳🇱 939 49 39ms 13 Sep 2024 139th lynn 939 49 39ms 20 Dec 2024 139th weeble 939 49 39ms 20 Dec 2024 139th sean-niemann 🇺🇸 939 49 39ms 11 Jan 2025 139th DayDun 🇸🇪 939 49 39ms 9 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 153rd thisishowmymindworks 🇳🇴 939 57 14ms 28 Jun 2024 153rd Salutations45 939 57 11ms 18 Nov 2024 153rd daniel-cardone 939 57 16ms 3 Jul 2025 153rd CaedenHarper 🇨🇦 939 57 11ms 28 Sep 2025 153rd BrunoVisnadi 🇧🇷 939 57 12ms 21 Oct 2025 153rd Laellekoenig 939 57 11ms 22 Oct 2025 153rd madex 🇩🇪 939 57 11ms 15 Mar 2026 168th Irratix 🇳🇱 939 83 432ms 4 May 2022 168th nwellnhof 🇩🇪 939 83 431ms 4 May 2022 168th ScottHamper 939 83 493ms 5 May 2022 168th Romain-1 🇫🇷 939 83 431ms 1 Jun 2022 168th Gaddy 🇫🇷 939 83 502ms 1 Jun 2022 168th 5quiwyrm 939 83 437ms 4 Sep 2022 168th Betuaredead 939 83 483ms 5 Jan 2023 168th Yewzir 🇧🇪 939 83 403ms 12 Feb 2023 168th btnlq 939 83 433ms 9 Mar 2023 168th Adix-null 🇱🇹 939 83 474ms 17 May 2023 168th AdrienHache 🇫🇷 939 83 444ms 8 Jun 2023 168th gblikas 939 83 449ms 23 Jul 2023 168th KrausRaus 🇺🇸 939 83 448ms 31 Jul 2023 168th namelessiw 939 83 422ms 9 Apr 2025 168th dokutan 939 83 463ms 9 Apr 2025 168th m-tkach 🇺🇦 939 83 410ms 10 Apr 2025 168th DialFrost 🇸🇬 939 83 432ms 10 Apr 2025 168th kylejcwu 939 83 435ms 19 Apr 2025 168th Tyrant7 939 83 413ms 19 Apr 2025 168th Yax42 🇫🇷 939 83 436ms 19 Apr 2025 168th MeWhenI 🇻🇦 939 83 445ms 19 Jun 2025 168th sean-niemann 🇺🇸 939 83 420ms 20 Jun 2025 168th stefangimmillaro 939 83 391ms 20 Jun 2025 168th tomh1012 939 83 429ms 28 Aug 2025 168th fuzzylojik-golf 🇺🇸 939 83 427ms 8 Sep 2025 168th CaedenHarper 🇨🇦 939 83 410ms 17 Oct 2025 168th arcpolaris 939 83 427ms 13 Jan 2026 168th amazingalek 🇳🇴 939 83 430ms 21 Jan 2026 168th scpchicken 🇵🇼 939 83 404ms 4 days ago 197th grey0ut 938 48 2,133ms 8 Apr 2025 198th JayXon 🇺🇸 937 66 1,468ms 18 Nov 2025 199th DialFrost 🇸🇬 937 89 470ms 24 Sep 2025 199th ovs-code 🇩🇪 937 89 514ms 24 Sep 2025 First Prev 101–200 of 3,689 Next Last