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 901st mtirado1 856 74 81ms 24 Dec 2022 901st Betuaredead 856 74 83ms 6 Jan 2023 901st KatieLG 🇬🇧 856 74 80ms 15 Jan 2023 901st bwat2 856 74 79ms 31 Mar 2023 901st stackotter 856 74 81ms 29 May 2023 901st ovs-code 🇩🇪 856 74 76ms 17 Apr 2024 901st madeforlosers 856 74 79ms 21 Nov 2024 908th frosster 856 76 7ms 12 May 2023 908th kyleclaassen 856 76 7ms 20 May 2023 908th NickTheEASDude 🇺🇸 856 76 6ms 7 May 2024 908th koipondx86 856 76 7ms 8 Nov 2024 912th eshilo-draper 856 91 317ms 4 Sep 2022 912th ericlangedijk 🇸🇮 856 91 330ms 23 May 2023 912th KatieLG 🇬🇧 856 91 333ms 30 Apr 2024 912th Mikey-Beep 🇬🇧 856 91 316ms 3 Sep 2024 916th DialFrost 🇸🇬 855 61 418ms 21 Jan 2024 917th Shanethegamer 🇺🇸 855 99 24ms 27 Apr 2023 918th ovs-code 🇩🇪 853 62 131ms 3 Aug 2024 918th MeWhenI 🇻🇦 853 62 134ms 25 Oct 2024 918th Shanethegamer 🇺🇸 853 62 141ms 19 Dec 2024 921st Shanethegamer 🇺🇸 853 85 411ms 18 May 2022 921st GrayJoKing 🇦🇺 853 85 404ms 20 May 2022 923rd albanian-laundromat 853 113 254ms 8 days ago 924th JRaspass 🇬🇧 852 46 351ms 4 May 2022 924th Natanaelel 🇸🇪 852 46 542ms 4 May 2022 926th the-zammers 852 68 172ms 2 Oct 2023 927th retrohun 851 64 6ms 6 Nov 2022 927th Re-Adventures 🇮🇳 851 64 5ms 7 Nov 2022 927th stellartux 851 64 5ms 26 Dec 2023 927th bac0id 851 64 5ms 29 Jun 2024 927th snoozingnewt 🇨🇦 851 64 5ms 1 Sep 2024 927th albanian-laundromat 851 64 5ms 22 Sep 2025 933rd lynn 851 96 29ms 11 Jul 2023 934th Schmitt-Very-Cool 851 98 435ms 26 Sep 2025 935th inventshah 850 74 2ms 4 May 2022 935th undersquire 850 74 2ms 24 Jun 2023 935th rdmsr 850 74 2ms 24 Jun 2023 935th Bmrl7 850 74 2ms 9 Jul 2023 935th Vinterion 850 74 4ms 6 Nov 2023 935th Herbert00709 🇵🇱 850 74 2ms 22 Dec 2023 941st janAkali 🇷🇺 850 77 123ms 12 Feb 2025 942nd krcs 🇵🇱 849 53 246ms 9 May 2022 942nd ryanlanegit 849 53 243ms 19 Jun 2022 942nd sisyphus-ppcg 🇦🇺 849 53 402ms 15 Aug 2022 945th randolchance 849 63 11ms 8 Jan 2023 945th CatsAreFluffy 849 63 10ms 18 Feb 2023 945th amiralitaheri 849 63 10ms 23 Feb 2023 945th RuyiLi 849 63 9ms 1 Apr 2023 945th TaserTheFox 🇺🇸 849 63 10ms 25 May 2023 945th pfysches-boop 849 63 9ms 6 Aug 2023 945th mhgockel 849 63 10ms 19 Aug 2023 945th NickTheEASDude 🇺🇸 849 63 10ms 18 Jan 2024 945th 823126 849 63 14ms 14 Nov 2024 945th Palladium02 849 63 9ms 12 May 2025 945th 4very 849 63 10ms 10 Jun 2025 945th Ultra814 849 63 9ms 21 Aug 2025 957th DialFrost 🇸🇬 848 66 189ms 7 Apr 2025 958th SirBogman 🇺🇸 848 89 38ms 4 May 2022 959th Shanethegamer 🇺🇸 848 98 225ms 26 Oct 2022 959th emgordon154 848 98 136ms 18 Feb 2025 961st jared-hughes 848 100 56ms 20 Jul 2022 961st ZakkkkAttackkkk 🇵🇭 848 100 52ms 10 Aug 2022 961st Walter225 848 100 54ms 25 Jul 2023 964th AdamHe17 847 73 20ms 31 May 2022 964th AliceFord 847 73 19ms 2 Jun 2022 964th Natanaelel 🇸🇪 847 73 16ms 16 Jun 2022 964th btjones0 847 73 24ms 21 Jun 2022 964th marcin7Cd 847 73 19ms 27 Jun 2022 964th tri1212 🇻🇳 847 73 27ms 18 Jul 2022 964th vhoulbreque 🇫🇷 847 73 19ms 18 Aug 2022 964th KatieLG 🇬🇧 847 73 20ms 29 Aug 2022 964th tkr-sh 🇰🇵 847 73 20ms 8 Sep 2022 964th jroscoe5 847 73 19ms 15 Sep 2022 964th fredrik-bakke 🇳🇴 847 73 20ms 18 Sep 2022 964th firegene 🇮🇪 847 73 20ms 27 Sep 2022 First Prev 901–975 of 3,513 Next Last