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 NFA Simulator 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 NFA Simulator 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 450th m-tkach 🇺🇦 896 69 16ms 4 May 2022 450th GolfingSuccess 🇬🇷 896 69 17ms 5 May 2022 450th jared-hughes 896 69 17ms 5 May 2022 450th ovs-code 🇩🇪 896 69 28ms 5 May 2022 450th btnlq 896 69 22ms 5 May 2022 450th sisyphus-ppcg 🇦🇺 896 69 15ms 6 May 2022 450th lynn 896 69 17ms 22 Aug 2022 450th Steffan153 🇫🇮 896 69 17ms 15 Nov 2022 450th AlexanderFair 896 69 23ms 19 Jul 2023 450th pardouin 🇫🇷 896 69 17ms 11 Nov 2023 450th AlephSquirrel 896 69 495ms 30 Dec 2023 450th kg583 🇺🇸 896 69 16ms 28 Jan 2024 450th davecame 896 69 29ms 20 Aug 2024 450th zacjl 896 69 17ms 19 Sep 2024 450th starfihs 896 69 17ms 12 Oct 2024 450th kops-cg 896 69 23ms 9 Feb 2025 450th sean-niemann 🇺🇸 896 69 19ms 7 Mar 2025 450th plcc0 896 69 15ms 26 Mar 2025 450th yujh-yujh 🇬🇸 896 69 16ms 28 Mar 2025 450th moustave 896 69 17ms 10 Jun 2025 450th 4atj 896 69 3,354ms 30 Jun 2025 450th dirckvdende 896 69 16ms 11 Jul 2025 450th xnor-gate 896 69 16ms 19 Aug 2025 450th BrunoVisnadi 🇧🇷 896 69 23ms 1 Oct 2025 450th Mukundan314 896 69 17ms 21 days ago 450th bizy-coder 896 69 17ms 13 days ago 450th duckyluuk 🇳🇱 896 69 18ms 2 hours ago 450th bricknellj 896 69 18ms 73 mins ago 479th Ripick 896 73 121ms 8 May 2023 480th ovs-code 🇩🇪 896 89 457ms 24 Jul 2024 480th jipsong 🇩🇪 896 89 467ms 7 Apr 2025 482nd MichalMarsalek 🇨🇿 895 87 324ms 5 May 2022 482nd Kloppermand 🇩🇰 895 87 326ms 7 Oct 2022 482nd bwat2 895 87 317ms 6 Apr 2023 485th JayXon 🇺🇸 894 74 3,078ms 14 Nov 2024 486th oeb25 894 93 128ms 16 May 2022 486th snobee 🇨🇦 894 93 129ms 8 Dec 2022 486th logvp 894 93 123ms 2 Jan 2024 486th elgan65536 894 93 124ms 5 Mar 2024 486th smartiel 894 93 120ms 12 Aug 2024 486th trist224 🇫🇷 894 93 126ms 12 Aug 2024 486th nullie 894 93 126ms 19 Dec 2024 486th lolgeny 894 93 123ms 22 Feb 2025 494th m-tkach 🇺🇦 894 117 27ms 7 May 2022 494th Lydxn 🇨🇦 894 117 28ms 7 May 2022 496th Shanethegamer 🇺🇸 893 61 6ms 31 Oct 2022 496th MeWhenI 🇻🇦 893 61 5ms 4 Nov 2022 498th Yewzir 🇧🇪 893 72 92ms 14 days ago 499th GolfingSuccess 🇬🇷 893 95 54ms 5 May 2022 499th Alex-x90 🇺🇸 893 95 55ms 4 Dec 2022 499th Mandrzejy 🇵🇱 893 95 50ms 22 Mar 2024 502nd Steffan153 🇫🇮 892 52 7ms 31 Dec 2022 503rd DialFrost 🇸🇬 892 56 820ms 1 Sep 2025 504th KatieLG 🇬🇧 892 60 11ms 4 May 2022 504th ScottHamper 892 60 10ms 5 May 2022 504th Re-Adventures 🇮🇳 892 60 10ms 5 May 2022 504th 0x24a537r9 892 60 10ms 29 Jul 2022 504th stefangabos 🇷🇴 892 60 10ms 19 Aug 2022 504th eranws 892 60 10ms 10 Sep 2022 504th GeorgeStechman 🇬🇧 892 60 10ms 26 Sep 2022 504th BloodStormKnight 892 60 10ms 15 Oct 2022 504th dzshn 892 60 11ms 3 Dec 2022 504th biocommando 🇫🇮 892 60 10ms 20 Dec 2022 504th Betuaredead 892 60 9ms 5 Jan 2023 504th piano-miles 892 60 10ms 16 Jan 2023 504th Yewzir 🇧🇪 892 60 10ms 12 Feb 2023 504th shellbertt 🇨🇦 892 60 10ms 26 Feb 2023 504th zakariamouhid 892 60 10ms 20 May 2023 504th raphaelimahorn 892 60 10ms 23 Aug 2023 504th jbt 892 60 11ms 25 Dec 2023 504th olleicua 🇺🇸 892 60 14ms 15 Feb 2024 504th HumanoidCPU 892 60 10ms 3 May 2024 504th dokutan 892 60 10ms 13 Aug 2024 504th LostSyntax21 🇬🇧 892 60 11ms 10 Sep 2024 504th xyangst 892 60 10ms 28 Sep 2024 First Prev 451–525 of 3,508 Next Last