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 224th Lydxn 🇨🇦 930 60 5ms 11 Oct 2023 224th GolfingSuccess 🇬🇷 930 60 4ms 16 Nov 2023 224th Steffan153 🇫🇮 930 60 5ms 28 Jan 2024 224th JayXon 🇺🇸 930 60 5ms 29 Jan 2024 224th rucin93 🇵🇱 930 60 5ms 10 Jul 2024 224th sean-niemann 🇺🇸 930 60 5ms 10 Jul 2024 232nd Lydxn 🇨🇦 930 70 95ms 17 Oct 2022 232nd JayXon 🇺🇸 930 70 96ms 17 Oct 2022 232nd GrayJoKing 🇦🇺 930 70 3ms 13 Jul 2024 232nd FlyingPenguin223 930 70 4ms 4 Oct 2024 232nd jipsong 🇩🇪 930 70 4ms 5 Apr 2025 237th Natanaelel 🇸🇪 929 28 176ms 22 Jul 2022 237th SirBogman 🇺🇸 929 28 162ms 17 Sep 2022 239th Steffan153 🇫🇮 929 67 37ms 19 Aug 2024 239th JayXon 🇺🇸 929 67 37ms 19 Aug 2024 241st sisyphus-ppcg 🇦🇺 928 50 2,414ms 31 Jan 2023 241st saito-ta 🇯🇵 928 50 759ms 12 Dec 2024 243rd JayXon 🇺🇸 928 57 133ms 19 Aug 2024 244th roavin 927 84 337ms 23 Jun 2022 244th tkr-sh 🇰🇵 927 84 318ms 20 Aug 2022 244th Nickmiste 927 84 326ms 9 Nov 2022 244th Matgc04 927 84 347ms 19 May 2023 244th postie77 927 84 323ms 19 May 2023 244th ertz1ertz 927 84 330ms 13 Sep 2024 244th Grabnukebomb 927 84 351ms 13 Sep 2024 244th Shanethegamer 🇺🇸 927 84 365ms 9 Apr 2025 244th HumanoidCPU 927 84 392ms 10 Apr 2025 244th annaproxy 927 84 371ms 11 Apr 2025 244th Re-Adventures 🇮🇳 927 84 376ms 15 Apr 2025 244th janbehrens 🇩🇪 927 84 372ms 17 Apr 2025 244th Flix7dev 🇧🇪 927 84 384ms 21 Oct 2025 257th KasperKivimaeki 🇫🇮 927 104 237ms 35 hours ago 258th h3ra993huskp 🇯🇵 926 90 440ms 12 days ago 259th edsrzf 🇳🇿 925 54 817ms 13 Sep 2025 259th CaedenHarper 🇨🇦 925 54 826ms 27 Sep 2025 259th sean-niemann 🇺🇸 925 54 833ms 27 Sep 2025 259th albanian-laundromat 925 54 859ms 14 Nov 2025 259th xsot 🇸🇬 925 54 873ms 26 days ago 264th ovs-code 🇩🇪 925 67 94ms 13 Dec 2022 264th Steffan153 🇫🇮 925 67 113ms 18 Dec 2022 264th Lydxn 🇨🇦 925 67 116ms 4 Feb 2023 264th sean-niemann 🇺🇸 925 67 103ms 7 Mar 2025 268th btnlq 924 59 6ms 6 Nov 2022 269th Lydxn 🇨🇦 924 90 125ms 6 May 2022 270th Bubbler-4 923 33 2,528ms 6 May 2022 270th rak1507 🇬🇧 923 33 108ms 8 May 2022 270th ngn 🇧🇬 923 33 25ms 11 May 2022 270th zacjl 923 33 32ms 3 Jun 2025 270th GrayJoKing 🇦🇺 923 33 13ms 4 Jun 2025 270th HPWiz 🇳🇿 923 33 9ms 26 days ago 276th nwellnhof 🇩🇪 923 51 36ms 4 May 2022 276th primo-ppcg 🇹🇭 923 51 38ms 6 May 2022 276th janlelis 923 51 36ms 10 May 2022 276th Natanaelel 🇸🇪 923 51 35ms 2 Jun 2022 280th uiamn 923 58 11ms 6 Sep 2022 280th 5quiwyrm 923 58 10ms 29 Sep 2022 280th alasdair-greenland 923 58 10ms 13 Jan 2023 280th kirjavascript 923 58 10ms 4 Aug 2025 280th Posandu 923 58 10ms 26 Aug 2025 280th mrxz 🇳🇱 923 58 11ms 3 Sep 2025 286th MichalMarsalek 🇨🇿 922 71 143ms 5 May 2022 286th Lydxn 🇨🇦 922 71 174ms 7 May 2022 286th GrayJoKing 🇦🇺 922 71 122ms 8 May 2022 286th JayXon 🇺🇸 922 71 121ms 8 May 2022 286th Steffan153 🇫🇮 922 71 133ms 9 Mar 2023 286th Shanethegamer 🇺🇸 922 71 131ms 15 May 2023 286th MeWhenI 🇻🇦 922 71 128ms 8 Aug 2023 286th sean-niemann 🇺🇸 922 71 127ms 9 Jan 2025 294th Steffan153 🇫🇮 922 76 11ms 15 May 2023 294th primo-ppcg 🇹🇭 922 76 17ms 15 May 2023 294th Lydxn 🇨🇦 922 76 8ms 22 May 2023 294th GrayJoKing 🇦🇺 922 76 13ms 24 Aug 2023 298th Herbert00709 🇵🇱 922 92 57ms 17 Nov 2023 298th 4QT0R 922 92 54ms 23 Nov 2023 298th ovs-code 🇩🇪 922 92 53ms 3 Jun 2024 First Prev 226–300 of 3,516 Next Last