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 152nd Salutations45 939 57 12ms 18 Nov 2024 152nd daniel-cardone 939 57 11ms 3 Jul 2025 152nd CaedenHarper 🇨🇦 939 57 13ms 28 Sep 2025 152nd BrunoVisnadi 🇧🇷 939 57 11ms 21 Oct 2025 152nd Laellekoenig 939 57 13ms 22 Oct 2025 152nd madex 🇩🇪 939 57 12ms 15 Mar 2026 167th Irratix 🇳🇱 939 83 459ms 4 May 2022 167th nwellnhof 🇩🇪 939 83 430ms 4 May 2022 167th ScottHamper 939 83 445ms 5 May 2022 167th Romain-1 🇫🇷 939 83 449ms 1 Jun 2022 167th Gaddy 🇫🇷 939 83 437ms 1 Jun 2022 167th 5quiwyrm 939 83 455ms 4 Sep 2022 167th Betuaredead 939 83 452ms 5 Jan 2023 167th Yewzir 🇧🇪 939 83 439ms 12 Feb 2023 167th btnlq 939 83 441ms 9 Mar 2023 167th Adix-null 🇱🇹 939 83 451ms 17 May 2023 167th AdrienHache 🇫🇷 939 83 397ms 8 Jun 2023 167th gblikas 939 83 513ms 23 Jul 2023 167th KrausRaus 🇺🇸 939 83 437ms 31 Jul 2023 167th namelessiw 939 83 498ms 9 Apr 2025 167th dokutan 939 83 419ms 9 Apr 2025 167th m-tkach 🇺🇦 939 83 427ms 10 Apr 2025 167th DialFrost 🇸🇬 939 83 419ms 10 Apr 2025 167th kylejcwu 939 83 450ms 19 Apr 2025 167th Tyrant7 939 83 425ms 19 Apr 2025 167th Yax42 🇫🇷 939 83 424ms 19 Apr 2025 167th MeWhenI 🇻🇦 939 83 447ms 19 Jun 2025 167th sean-niemann 🇺🇸 939 83 413ms 20 Jun 2025 167th stefangimmillaro 939 83 425ms 20 Jun 2025 167th tomh1012 939 83 392ms 28 Aug 2025 167th fuzzylojik-golf 🇺🇸 939 83 430ms 8 Sep 2025 167th CaedenHarper 🇨🇦 939 83 440ms 17 Oct 2025 167th arcpolaris 939 83 458ms 13 Jan 2026 167th amazingalek 🇳🇴 939 83 416ms 21 Jan 2026 195th grey0ut 938 48 2,206ms 8 Apr 2025 196th DialFrost 🇸🇬 938 89 441ms 24 Sep 2025 196th ovs-code 🇩🇪 938 89 454ms 24 Sep 2025 196th dokutan 938 89 372ms 24 Sep 2025 196th sean-niemann 🇺🇸 938 89 397ms 24 Sep 2025 196th Shanethegamer 🇺🇸 938 89 477ms 25 Sep 2025 196th nwellnhof 🇩🇪 938 89 454ms 25 Sep 2025 196th m-tkach 🇺🇦 938 89 386ms 25 Sep 2025 196th namelessiw 938 89 390ms 2 Oct 2025 196th Yewzir 🇧🇪 938 89 349ms 2 Oct 2025 196th Yax42 🇫🇷 938 89 467ms 4 Oct 2025 196th stefangimmillaro 938 89 428ms 6 Oct 2025 196th CaedenHarper 🇨🇦 938 89 467ms 9 Oct 2025 196th Jacob385 938 89 425ms 27 Oct 2025 196th MeWhenI 🇻🇦 938 89 449ms 7 Nov 2025 196th ethanlally 938 89 380ms 10 Nov 2025 196th snoozingnewt 🇨🇦 938 89 384ms 23 Nov 2025 196th ScottHamper 938 89 467ms 30 Nov 2025 196th KasperKivimaeki 🇫🇮 938 89 444ms 30 Nov 2025 214th JayXon 🇺🇸 937 66 1,468ms 18 Nov 2025 215th JayXon 🇺🇸 936 73 4ms 23 Dec 2025 216th vang1ong7ang 935 89 133ms 10 days ago 217th nwellnhof 🇩🇪 934 42 380ms 4 May 2022 217th Lydxn 🇨🇦 934 42 1,594ms 4 May 2022 217th GrayJoKing 🇦🇺 934 42 396ms 4 May 2022 217th Steffan153 🇫🇮 934 42 387ms 16 Dec 2022 217th sisyphus-ppcg 🇦🇺 934 42 387ms 31 Jan 2023 217th ovs-code 🇩🇪 934 42 379ms 30 Dec 2023 217th sean-niemann 🇺🇸 934 42 385ms 8 Mar 2025 224th emplv 🇱🇻 934 60 9ms 5 May 2022 224th GrayJoKing 🇦🇺 934 60 11ms 6 May 2022 224th targrik 934 60 10ms 24 Dec 2024 224th xsot 🇸🇬 934 60 12ms 1 May 2025 228th m-tkach 🇺🇦 934 91 59ms 5 May 2022 228th 09cf 934 91 59ms 4 Oct 2023 230th Steffan153 🇫🇮 933 51 1,122ms 19 Mar 2026 231st GrayJoKing 🇦🇺 933 56 470ms 15 Jan 2024 231st AlephSquirrel 933 56 419ms 21 Jan 2024 231st CaedenHarper 🇨🇦 933 56 454ms 26 Jan 2026 234th MeWhenI 🇻🇦 933 68 99ms 23 Feb 2023 234th JayXon 🇺🇸 933 68 104ms 4 Mar 2025 236th ovs-code 🇩🇪 932 60 5ms 9 Oct 2023 236th GrayJoKing 🇦🇺 932 60 4ms 11 Oct 2023 236th Lydxn 🇨🇦 932 60 5ms 11 Oct 2023 236th GolfingSuccess 🇬🇷 932 60 4ms 16 Nov 2023 236th Steffan153 🇫🇮 932 60 5ms 28 Jan 2024 First Prev 161–240 of 3,789 Next Last