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 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 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 Apéry’s Constant Binary Lambda Calculus 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 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 ArkScript 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 ><> 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 ArkScript 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 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 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 Apéry’s Constant Binary Lambda Calculus 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 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 880th sultan 859 72 17ms 6 Jun 2022 880th annaproxy 859 72 22ms 22 Aug 2022 880th BlankSpruce 859 72 24ms 9 Sep 2022 880th ValentinCassayre 859 72 21ms 8 Oct 2022 880th mathb0y512 859 72 24ms 1 Dec 2022 880th NoahBolohan 🇨🇦 859 72 25ms 28 Feb 2023 880th neel11235813 859 72 22ms 8 Mar 2023 880th Kacarott 🇦🇺 859 72 17ms 24 Mar 2023 880th Fracture17 859 72 19ms 8 Apr 2023 880th ayushdewan 859 72 25ms 7 May 2023 880th PeterTillema 🇳🇱 859 72 25ms 17 Oct 2023 880th Glinte 859 72 24ms 11 Dec 2023 880th nanatsu8 859 72 26ms 11 May 2024 880th thej10n 859 72 20ms 12 Jun 2024 880th tobeannouncd 859 72 19ms 25 Apr 2025 880th YAJUE114514 859 72 21ms 15 Aug 2025 880th snoozingnewt 🇨🇦 859 72 25ms 6 Dec 2025 880th JOrE20 859 72 18ms 5 days ago 899th aditsu 859 77 2,303ms 23 Nov 2025 900th Yewzir 🇧🇪 858 65 4ms 9 Oct 2023 900th MeWhenI 🇻🇦 858 65 3ms 10 Oct 2023 902nd Shanethegamer 🇺🇸 858 83 1,374ms 4 May 2022 903rd dokutan 858 93 428ms 27 Sep 2025 904th yeminghan2021 858 99 54ms 3 Feb 2025 905th frankgraziano 858 198 108ms 14 Oct 2025 906th henrydukepickle 857 97 122ms 8 Jul 2025 907th SirBogman 🇺🇸 856 55 38ms 5 May 2022 907th olivermrose 🇺🇸 856 55 42ms 6 May 2022 907th 4hg 🇺🇸 856 55 51ms 24 Aug 2022 907th DialFrost 🇸🇬 856 55 43ms 1 Jan 2023 907th error256 856 55 40ms 4 May 2024 912th JayXon 🇺🇸 856 56 1,287ms 9 May 2022 913th mtirado1 856 74 79ms 24 Dec 2022 913th Betuaredead 856 74 81ms 6 Jan 2023 913th KatieLG 🇬🇧 856 74 81ms 15 Jan 2023 913th bwat2 856 74 82ms 31 Mar 2023 913th stackotter 856 74 78ms 29 May 2023 913th ovs-code 🇩🇪 856 74 82ms 17 Apr 2024 913th madeforlosers 856 74 80ms 21 Nov 2024 920th eshilo-draper 856 91 396ms 4 Sep 2022 920th ericlangedijk 🇸🇮 856 91 428ms 23 May 2023 920th KatieLG 🇬🇧 856 91 419ms 30 Apr 2024 920th Mikey-Beep 🇬🇧 856 91 388ms 3 Sep 2024 924th DialFrost 🇸🇬 855 61 889ms 21 Jan 2024 925th Shanethegamer 🇺🇸 855 99 24ms 27 Apr 2023 926th ovs-code 🇩🇪 853 62 147ms 3 Aug 2024 926th MeWhenI 🇻🇦 853 62 143ms 25 Oct 2024 926th Shanethegamer 🇺🇸 853 62 137ms 19 Dec 2024 929th Shanethegamer 🇺🇸 853 85 451ms 18 May 2022 929th GrayJoKing 🇦🇺 853 85 448ms 20 May 2022 931st JRaspass 🇬🇧 852 46 336ms 4 May 2022 931st Natanaelel 🇸🇪 852 46 336ms 4 May 2022 933rd retrohun 852 64 6ms 6 Nov 2022 933rd Re-Adventures 🇮🇳 852 64 5ms 7 Nov 2022 933rd stellartux 852 64 5ms 26 Dec 2023 933rd bac0id 852 64 5ms 29 Jun 2024 933rd snoozingnewt 🇨🇦 852 64 5ms 1 Sep 2024 933rd albanian-laundromat 852 64 5ms 22 Sep 2025 939th the-zammers 852 68 172ms 2 Oct 2023 940th lynn 852 96 29ms 11 Jul 2023 941st janAkali 🇷🇺 851 77 123ms 12 Feb 2025 942nd Schmitt-Very-Cool 851 98 434ms 26 Sep 2025 943rd inventshah 850 74 2ms 4 May 2022 943rd undersquire 850 74 2ms 24 Jun 2023 943rd rdmsr 850 74 2ms 24 Jun 2023 943rd Bmrl7 850 74 2ms 9 Jul 2023 943rd Vinterion 850 74 4ms 6 Nov 2023 943rd Herbert00709 🇵🇱 850 74 2ms 22 Dec 2023 949th krcs 🇵🇱 849 53 281ms 9 May 2022 949th ryanlanegit 849 53 312ms 19 Jun 2022 949th sisyphus-ppcg 🇦🇺 849 53 453ms 15 Aug 2022 952nd randolchance 849 63 12ms 8 Jan 2023 952nd CatsAreFluffy 849 63 11ms 18 Feb 2023 952nd amiralitaheri 849 63 11ms 23 Feb 2023 952nd RuyiLi 849 63 10ms 1 Apr 2023 952nd TaserTheFox 🇺🇸 849 63 11ms 25 May 2023 952nd pfysches-boop 849 63 12ms 6 Aug 2023 952nd mhgockel 849 63 11ms 19 Aug 2023 952nd NickTheEASDude 🇺🇸 849 63 11ms 18 Jan 2024 952nd 823126 849 63 11ms 14 Nov 2024 First Prev 881–960 of 3,567 Next Last