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 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 449th GolfingSuccess 🇬🇷 896 69 15ms 5 May 2022 449th jared-hughes 896 69 17ms 5 May 2022 449th ovs-code 🇩🇪 896 69 23ms 5 May 2022 449th btnlq 896 69 17ms 5 May 2022 449th sisyphus-ppcg 🇦🇺 896 69 14ms 6 May 2022 449th lynn 896 69 16ms 22 Aug 2022 449th Steffan153 🇫🇮 896 69 17ms 15 Nov 2022 449th AlexanderFair 896 69 23ms 19 Jul 2023 449th pardouin 🇫🇷 896 69 17ms 11 Nov 2023 449th AlephSquirrel 896 69 478ms 30 Dec 2023 449th kg583 🇺🇸 896 69 23ms 28 Jan 2024 449th davecame 896 69 22ms 20 Aug 2024 449th zacjl 896 69 17ms 19 Sep 2024 449th starfihs 896 69 16ms 12 Oct 2024 449th kops-cg 896 69 22ms 9 Feb 2025 449th sean-niemann 🇺🇸 896 69 17ms 7 Mar 2025 449th plcc0 896 69 15ms 26 Mar 2025 449th yujh-yujh 🇬🇸 896 69 16ms 28 Mar 2025 449th moustave 896 69 16ms 10 Jun 2025 449th 4atj 896 69 3,539ms 30 Jun 2025 449th dirckvdende 896 69 18ms 11 Jul 2025 449th xnor-gate 896 69 16ms 19 Aug 2025 449th BrunoVisnadi 🇧🇷 896 69 16ms 1 Oct 2025 449th Mukundan314 896 69 18ms 13 Nov 2025 449th bizy-coder 896 69 16ms 20 days ago 449th duckyluuk 🇳🇱 896 69 17ms 7 days ago 449th bricknellj 896 69 17ms 7 days ago 478th Ripick 896 73 133ms 8 May 2023 479th ovs-code 🇩🇪 896 89 438ms 24 Jul 2024 479th jipsong 🇩🇪 896 89 467ms 7 Apr 2025 481st MichalMarsalek 🇨🇿 895 87 324ms 5 May 2022 481st Kloppermand 🇩🇰 895 87 326ms 7 Oct 2022 481st bwat2 895 87 310ms 6 Apr 2023 484th JayXon 🇺🇸 894 74 2,888ms 14 Nov 2024 485th oeb25 894 93 168ms 16 May 2022 485th snobee 🇨🇦 894 93 190ms 8 Dec 2022 485th logvp 894 93 148ms 2 Jan 2024 485th elgan65536 894 93 150ms 5 Mar 2024 485th smartiel 894 93 178ms 12 Aug 2024 485th trist224 🇫🇷 894 93 141ms 12 Aug 2024 485th nullie 894 93 175ms 19 Dec 2024 485th lolgeny 894 93 178ms 22 Feb 2025 493rd m-tkach 🇺🇦 894 117 25ms 7 May 2022 493rd Lydxn 🇨🇦 894 117 26ms 7 May 2022 495th Shanethegamer 🇺🇸 893 61 5ms 31 Oct 2022 495th MeWhenI 🇻🇦 893 61 5ms 4 Nov 2022 497th Yewzir 🇧🇪 893 72 92ms 21 days ago 498th GolfingSuccess 🇬🇷 893 95 54ms 5 May 2022 498th Alex-x90 🇺🇸 893 95 51ms 4 Dec 2022 498th Mandrzejy 🇵🇱 893 95 52ms 22 Mar 2024 501st Steffan153 🇫🇮 892 52 7ms 31 Dec 2022 502nd DialFrost 🇸🇬 892 56 863ms 1 Sep 2025 503rd KatieLG 🇬🇧 892 60 10ms 4 May 2022 503rd ScottHamper 892 60 10ms 5 May 2022 503rd Re-Adventures 🇮🇳 892 60 10ms 5 May 2022 503rd 0x24a537r9 892 60 10ms 29 Jul 2022 503rd stefangabos 🇷🇴 892 60 10ms 19 Aug 2022 503rd eranws 892 60 10ms 10 Sep 2022 503rd GeorgeStechman 🇬🇧 892 60 10ms 26 Sep 2022 503rd BloodStormKnight 892 60 10ms 15 Oct 2022 503rd dzshn 892 60 10ms 3 Dec 2022 503rd biocommando 🇫🇮 892 60 10ms 20 Dec 2022 503rd Betuaredead 892 60 9ms 5 Jan 2023 503rd piano-miles 892 60 9ms 16 Jan 2023 503rd Yewzir 🇧🇪 892 60 10ms 12 Feb 2023 503rd shellbertt 🇨🇦 892 60 10ms 26 Feb 2023 503rd zakariamouhid 892 60 10ms 20 May 2023 503rd raphaelimahorn 892 60 10ms 23 Aug 2023 503rd jbt 892 60 9ms 25 Dec 2023 503rd olleicua 🇺🇸 892 60 10ms 15 Feb 2024 503rd HumanoidCPU 892 60 10ms 3 May 2024 503rd dokutan 892 60 10ms 13 Aug 2024 503rd LostSyntax21 🇬🇧 892 60 11ms 10 Sep 2024 503rd xyangst 892 60 10ms 28 Sep 2024 503rd a6166231 🇨🇳 892 60 9ms 15 May 2025 First Prev 451–525 of 3,515 Next Last