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 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 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 ArkScript 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 ArkScript 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 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 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 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 241st sisyphus-ppcg 🇦🇺 928 65 106ms 25 days ago 241st ovs-code 🇩🇪 928 65 123ms 25 days ago 243rd roavin 928 84 337ms 23 Jun 2022 243rd tkr-sh 🇰🇵 928 84 318ms 20 Aug 2022 243rd Nickmiste 928 84 326ms 9 Nov 2022 243rd Matgc04 928 84 330ms 19 May 2023 243rd postie77 928 84 323ms 19 May 2023 243rd ertz1ertz 928 84 326ms 13 Sep 2024 243rd Grabnukebomb 928 84 347ms 13 Sep 2024 243rd Shanethegamer 🇺🇸 928 84 358ms 9 Apr 2025 243rd HumanoidCPU 928 84 392ms 10 Apr 2025 243rd annaproxy 928 84 371ms 11 Apr 2025 243rd Re-Adventures 🇮🇳 928 84 376ms 15 Apr 2025 243rd janbehrens 🇩🇪 928 84 372ms 17 Apr 2025 243rd Flix7dev 🇧🇪 928 84 384ms 21 Oct 2025 256th h3ra993huskp 🇯🇵 927 90 440ms 30 Nov 2025 257th KasperKivimaeki 🇫🇮 927 104 237ms 10 Dec 2025 258th edsrzf 🇳🇿 925 54 817ms 13 Sep 2025 258th CaedenHarper 🇨🇦 925 54 826ms 27 Sep 2025 258th sean-niemann 🇺🇸 925 54 833ms 27 Sep 2025 258th albanian-laundromat 925 54 859ms 14 Nov 2025 258th xsot 🇸🇬 925 54 873ms 15 Nov 2025 263rd btnlq 924 59 6ms 6 Nov 2022 263rd DialFrost 🇸🇬 924 59 6ms 21 days ago 265th Lydxn 🇨🇦 924 90 125ms 6 May 2022 266th Bubbler-4 923 33 2,528ms 6 May 2022 266th rak1507 🇬🇧 923 33 108ms 8 May 2022 266th ngn 🇧🇬 923 33 25ms 11 May 2022 266th zacjl 923 33 32ms 3 Jun 2025 266th GrayJoKing 🇦🇺 923 33 13ms 4 Jun 2025 266th HPWiz 🇳🇿 923 33 9ms 16 Nov 2025 272nd nwellnhof 🇩🇪 923 51 39ms 4 May 2022 272nd primo-ppcg 🇹🇭 923 51 45ms 6 May 2022 272nd janlelis 923 51 39ms 10 May 2022 272nd Natanaelel 🇸🇪 923 51 37ms 2 Jun 2022 276th uiamn 923 58 16ms 6 Sep 2022 276th 5quiwyrm 923 58 14ms 29 Sep 2022 276th alasdair-greenland 923 58 12ms 13 Jan 2023 276th kirjavascript 923 58 11ms 4 Aug 2025 276th Posandu 923 58 11ms 26 Aug 2025 276th mrxz 🇳🇱 923 58 19ms 3 Sep 2025 282nd MichalMarsalek 🇨🇿 923 71 143ms 5 May 2022 282nd Lydxn 🇨🇦 923 71 174ms 7 May 2022 282nd GrayJoKing 🇦🇺 923 71 122ms 8 May 2022 282nd JayXon 🇺🇸 923 71 121ms 8 May 2022 282nd Steffan153 🇫🇮 923 71 133ms 9 Mar 2023 282nd Shanethegamer 🇺🇸 923 71 131ms 15 May 2023 282nd MeWhenI 🇻🇦 923 71 128ms 8 Aug 2023 282nd sean-niemann 🇺🇸 923 71 127ms 9 Jan 2025 290th Steffan153 🇫🇮 922 76 11ms 15 May 2023 290th primo-ppcg 🇹🇭 922 76 17ms 15 May 2023 290th Lydxn 🇨🇦 922 76 8ms 22 May 2023 290th GrayJoKing 🇦🇺 922 76 13ms 24 Aug 2023 294th Herbert00709 🇵🇱 922 92 62ms 17 Nov 2023 294th 4QT0R 922 92 53ms 23 Nov 2023 294th ovs-code 🇩🇪 922 92 60ms 3 Jun 2024 297th xnor-gate 920 63 187ms 20 Jan 2025 298th pardouin 🇫🇷 919 72 3,294ms 21 May 2025 299th primo-ppcg 🇹🇭 918 61 7ms 6 May 2022 299th sisyphus-ppcg 🇦🇺 918 61 12ms 14 Jul 2022 301st Lydxn 🇨🇦 918 70 104ms 7 May 2022 301st JayXon 🇺🇸 918 70 106ms 7 May 2022 303rd GrayJoKing 🇦🇺 918 74 4ms 21 days ago 303rd FlyingPenguin223 918 74 6ms 15 days ago 305th JayXon 🇺🇸 918 79 584ms 5 Apr 2023 305th Lydxn 🇨🇦 918 79 583ms 9 Apr 2023 307th JayXon 🇺🇸 918 105 246ms 4 Oct 2025 308th Steffan153 🇫🇮 917 71 136ms 14 Oct 2022 308th Shanethegamer 🇺🇸 917 71 133ms 15 Oct 2022 308th stefangimmillaro 917 71 139ms 16 Oct 2022 308th MeWhenI 🇻🇦 917 71 114ms 16 Oct 2022 312th annaproxy 917 79 111ms 24 Aug 2022 312th GrayJoKing 🇦🇺 917 79 83ms 28 Aug 2022 312th IanUtley 917 79 114ms 3 Nov 2023 312th Kacarott 🇦🇺 917 79 117ms 13 Jun 2024 316th Steffan153 🇫🇮 917 81 24ms 11 Dec 2023 317th arctouch-cristiannevianna 917 85 341ms 3 Apr 2023 317th tomtheisen 🇺🇸 917 85 396ms 10 Apr 2025 319th Mukundan314 916 67 1,180ms 19 days ago 320th Shanethegamer 🇺🇸 916 87 390ms 15 May 2023 First Prev 241–320 of 3,529 Next Last