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 241st MeWhenI 🇻🇦 932 68 98ms 23 Feb 2023 241st JayXon 🇺🇸 932 68 98ms 4 Mar 2025 243rd Lydxn 🇨🇦 931 70 106ms 17 Oct 2022 243rd JayXon 🇺🇸 931 70 118ms 17 Oct 2022 245th Natanaelel 🇸🇪 929 28 168ms 22 Jul 2022 245th SirBogman 🇺🇸 929 28 180ms 17 Sep 2022 245th CaedenHarper 🇨🇦 929 28 161ms 24 days ago 248th sisyphus-ppcg 🇦🇺 929 50 2,565ms 31 Jan 2023 248th saito-ta 🇯🇵 929 50 844ms 12 Dec 2024 250th JayXon 🇺🇸 929 57 150ms 19 Aug 2024 251st sisyphus-ppcg 🇦🇺 929 65 106ms 19 Dec 2025 251st ovs-code 🇩🇪 929 65 118ms 19 Dec 2025 253rd Steffan153 🇫🇮 929 67 37ms 19 Aug 2024 253rd JayXon 🇺🇸 929 67 37ms 19 Aug 2024 255th roavin 928 84 361ms 23 Jun 2022 255th tkr-sh 🇰🇵 928 84 369ms 20 Aug 2022 255th Nickmiste 928 84 364ms 9 Nov 2022 255th Matgc04 928 84 349ms 19 May 2023 255th postie77 928 84 369ms 19 May 2023 255th ertz1ertz 928 84 377ms 13 Sep 2024 255th Grabnukebomb 928 84 366ms 13 Sep 2024 255th Shanethegamer 🇺🇸 928 84 388ms 9 Apr 2025 255th HumanoidCPU 928 84 390ms 10 Apr 2025 255th annaproxy 928 84 380ms 11 Apr 2025 255th Re-Adventures 🇮🇳 928 84 376ms 15 Apr 2025 255th janbehrens 🇩🇪 928 84 380ms 17 Apr 2025 255th Flix7dev 🇧🇪 928 84 344ms 21 Oct 2025 268th h3ra993huskp 🇯🇵 927 90 425ms 30 Nov 2025 269th KasperKivimaeki 🇫🇮 927 104 358ms 10 Dec 2025 270th btnlq 925 59 5ms 6 Nov 2022 270th DialFrost 🇸🇬 925 59 5ms 23 Dec 2025 272nd Lydxn 🇨🇦 925 90 127ms 6 May 2022 273rd Bubbler-4 924 33 2,528ms 6 May 2022 273rd rak1507 🇬🇧 924 33 108ms 8 May 2022 273rd ngn 🇧🇬 924 33 25ms 11 May 2022 273rd zacjl 924 33 32ms 3 Jun 2025 273rd GrayJoKing 🇦🇺 924 33 13ms 4 Jun 2025 273rd HPWiz 🇳🇿 924 33 9ms 16 Nov 2025 279th nwellnhof 🇩🇪 924 51 40ms 4 May 2022 279th primo-ppcg 🇹🇭 924 51 42ms 6 May 2022 279th janlelis 924 51 38ms 10 May 2022 279th Natanaelel 🇸🇪 924 51 40ms 2 Jun 2022 279th blaztoma 🇱🇹 924 51 38ms 11 Mar 2026 284th MichalMarsalek 🇨🇿 924 71 137ms 5 May 2022 284th Lydxn 🇨🇦 924 71 132ms 7 May 2022 284th GrayJoKing 🇦🇺 924 71 128ms 8 May 2022 284th JayXon 🇺🇸 924 71 128ms 8 May 2022 284th Steffan153 🇫🇮 924 71 131ms 9 Mar 2023 284th Shanethegamer 🇺🇸 924 71 126ms 15 May 2023 284th MeWhenI 🇻🇦 924 71 133ms 8 Aug 2023 284th sean-niemann 🇺🇸 924 71 129ms 9 Jan 2025 292nd Herbert00709 🇵🇱 924 92 59ms 17 Nov 2023 292nd 4QT0R 924 92 61ms 23 Nov 2023 292nd ovs-code 🇩🇪 924 92 56ms 3 Jun 2024 295th uiamn 923 58 11ms 6 Sep 2022 295th 5quiwyrm 923 58 12ms 29 Sep 2022 295th alasdair-greenland 923 58 12ms 13 Jan 2023 295th kirjavascript 923 58 11ms 4 Aug 2025 295th Posandu 923 58 11ms 26 Aug 2025 295th mrxz 🇳🇱 923 58 11ms 3 Sep 2025 301st GrayJoKing 🇦🇺 923 74 4ms 23 Dec 2025 301st FlyingPenguin223 923 74 6ms 29 Dec 2025 303rd pardouin 🇫🇷 922 72 2,442ms 21 May 2025 304th Steffan153 🇫🇮 922 76 12ms 15 May 2023 304th primo-ppcg 🇹🇭 922 76 20ms 15 May 2023 304th Lydxn 🇨🇦 922 76 8ms 22 May 2023 304th GrayJoKing 🇦🇺 922 76 12ms 24 Aug 2023 304th kg583 🇺🇸 922 76 12ms 22 Feb 2026 309th xnor-gate 920 63 187ms 20 Jan 2025 310th Steffan153 🇫🇮 920 79 21ms 21 days ago 311th Lydxn 🇨🇦 919 70 143ms 7 May 2022 311th JayXon 🇺🇸 919 70 143ms 7 May 2022 313th annaproxy 919 79 112ms 24 Aug 2022 313th GrayJoKing 🇦🇺 919 79 86ms 28 Aug 2022 313th JayXon 🇺🇸 919 79 560ms 5 Apr 2023 313th Lydxn 🇨🇦 919 79 556ms 9 Apr 2023 313th IanUtley 919 79 115ms 3 Nov 2023 313th Kacarott 🇦🇺 919 79 121ms 13 Jun 2024 319th primo-ppcg 🇹🇭 918 61 7ms 6 May 2022 319th sisyphus-ppcg 🇦🇺 918 61 9ms 14 Jul 2022 First Prev 241–320 of 3,729 Next Last