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 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 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 316th Kacarott 🇦🇺 918 79 121ms 13 Jun 2024 322nd JayXon 🇺🇸 918 105 291ms 4 Oct 2025 323rd Steffan153 🇫🇮 917 71 124ms 14 Oct 2022 323rd Shanethegamer 🇺🇸 917 71 125ms 15 Oct 2022 323rd stefangimmillaro 917 71 114ms 16 Oct 2022 323rd MeWhenI 🇻🇦 917 71 118ms 16 Oct 2022 327th arctouch-cristiannevianna 917 85 345ms 3 Apr 2023 327th tomtheisen 🇺🇸 917 85 424ms 10 Apr 2025 329th Shanethegamer 🇺🇸 917 87 461ms 15 May 2023 329th JayXon 🇺🇸 917 87 481ms 15 May 2023 329th Steffan153 🇫🇮 917 87 460ms 16 May 2023 329th Lydxn 🇨🇦 917 87 456ms 16 May 2023 329th GrayJoKing 🇦🇺 917 87 461ms 11 Aug 2023 329th sean-niemann 🇺🇸 917 87 468ms 11 Jul 2024 335th kmathis22 917 91 370ms 20 Nov 2025 336th Natanaelel 🇸🇪 916 57 459ms 17 Jan 2024 336th Kacarott 🇦🇺 916 57 402ms 10 Sep 2024 338th Shanethegamer 🇺🇸 916 61 4ms 9 Oct 2023 339th Mukundan314 916 67 609ms 25 Dec 2025 340th Lydxn 🇨🇦 916 81 39ms 1 Apr 2023 341st ovs-code 🇩🇪 915 75 67ms 12 Sep 2024 341st Kacarott 🇦🇺 915 75 62ms 13 Sep 2024 343rd andersk 🇺🇸 914 91 139ms 25 Oct 2022 343rd Super-Pizza 🇨🇦 914 91 128ms 4 Dec 2022 343rd klixel 🇨🇦 914 91 126ms 20 May 2023 343rd lynn 914 91 128ms 6 Jul 2024 343rd edsrzf 🇳🇿 914 91 126ms 29 Nov 2024 343rd DialFrost 🇸🇬 914 91 133ms 7 Apr 2025 343rd elgan65536 🇺🇸 914 91 122ms 10 Feb 2026 343rd fantaize 914 91 123ms 26 days ago 343rd snoozingnewt 🇨🇦 914 91 132ms 36 hours ago 352nd edsrzf 🇳🇿 913 52 1,067ms 26 days ago 353rd lynn 913 78 1,231ms 5 May 2022 354th tailorspy 913 93 55ms 27 May 2024 354th sean-niemann 🇺🇸 913 93 60ms 9 Jun 2025 354th KasperKivimaeki 🇫🇮 913 93 63ms 26 Oct 2025 357th nai62 912 69 7ms 27 Aug 2022 358th GrayJoKing 🇦🇺 912 71 321ms 10 Aug 2023 359th GolfingSuccess 🇬🇷 910 64 91ms 14 Dec 2024 359th MeWhenI 🇻🇦 910 64 96ms 24 Dec 2024 359th GrayJoKing 🇦🇺 910 64 72ms 25 Nov 2025 362nd edsrzf 🇳🇿 910 72 128ms 3 Jul 2025 363rd sean-niemann 🇺🇸 910 75 5ms 23 Dec 2025 363rd Steffan153 🇫🇮 910 75 5ms 11 Feb 2026 365th Shanethegamer 🇺🇸 910 77 14ms 15 May 2023 366th primo-ppcg 🇹🇭 910 93 30ms 7 May 2022 366th AlephSquirrel 910 93 26ms 21 Jan 2023 366th kg583 🇺🇸 910 93 29ms 26 Dec 2024 366th CLOStrophobic 🇮🇹 910 93 30ms 17 Jan 2025 366th edsrzf 🇳🇿 910 93 30ms 3 Jul 2025 371st Betuaredead 909 60 4ms 5 Jan 2023 371st Yewzir 🇧🇪 909 60 4ms 12 Feb 2023 371st Steffan153 🇫🇮 909 60 4ms 23 Feb 2023 371st GolfingSuccess 🇬🇷 909 60 4ms 16 Oct 2024 371st sean-niemann 🇺🇸 909 60 9ms 7 Mar 2025 376th MeWhenI 🇻🇦 909 63 197ms 5 May 2022 377th Lydxn 🇨🇦 909 68 463ms 5 May 2022 377th GrayJoKing 🇦🇺 909 68 15ms 15 Nov 2022 377th Bubbler-4 909 68 15ms 15 Nov 2022 377th Rubiksmath 909 68 15ms 14 Aug 2023 377th Languag3 909 68 16ms 1 Mar 2026 382nd marshallward 🇺🇸 909 83 40ms 10 May 2022 383rd ovs-code 🇩🇪 909 84 65ms 25 Sep 2022 383rd GrayJoKing 🇦🇺 909 84 65ms 11 Aug 2023 383rd edsrzf 🇳🇿 909 84 65ms 12 Nov 2025 383rd Steffan153 🇫🇮 909 84 68ms 26 Feb 2026 387th m-tkach 🇺🇦 909 90 31ms 7 Dec 2023 388th kg583 🇺🇸 908 80 18ms 25 days ago 389th edsrzf 🇳🇿 908 83 41ms 14 Jan 2025 389th kg583 🇺🇸 908 83 42ms 14 Feb 2025 391st KrausRaus 🇺🇸 907 59 12ms 4 May 2022 391st voytxt 🇨🇿 907 59 10ms 4 May 2022 391st KingSkyrock 🇺🇸 907 59 11ms 18 May 2022 391st ZakkkkAttackkkk 🇵🇭 907 59 10ms 14 Jul 2022 391st aksyristos 907 59 11ms 28 Oct 2022 391st nstearns96 🇬🇧 907 59 11ms 28 Nov 2022 391st janbehrens 🇩🇪 907 59 10ms 17 May 2023 391st Shanethegamer 🇺🇸 907 59 11ms 25 May 2023 391st Maznek 907 59 10ms 26 Jun 2023 391st SpiritAxolotl 🇺🇸 907 59 10ms 20 Mar 2024 First Prev 321–400 of 3,665 Next Last