Collatz in all languages in bytes. Cheevos Holes Recent Holes Langs Medals Misc 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 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 Maze Medal Tally 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 Transpose Sentence United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Apéry’s Constant Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Hilbert Curve Mandelbrot Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir F# Factor Forth Fortran Gleam Go GolfScript 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 Erlang Fennel Groovy Harbour Hare Haxe Hush Hy iogii Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua 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 F# Factor Forth Fortran Gleam Go GolfScript 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 Erlang Fennel Groovy Harbour Hare Haxe Hush Hy iogii Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua 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 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 Maze Medal Tally 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 Transpose Sentence United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Apéry’s Constant Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Hilbert Curve Mandelbrot Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Bytes Time 107th Just4FunCoder 951 70 17 Feb 2024 107th ThijsLuttikhuis 951 70 3 Mar 2024 107th elgan65536 951 70 5 Mar 2024 107th jtaxen 951 70 1 Apr 2024 107th HumanoidCPU 951 70 6 May 2024 107th abc7-12 951 70 6 May 2024 107th ahmetdemirag 🇨🇾 951 70 9 Jun 2024 107th FranklinJiaChen 951 70 4 Jul 2024 107th 5cw 🇺🇸 951 70 13 Jul 2024 107th CaedenHarper 🇨🇦 951 70 3 Aug 2024 107th emgordon154 951 70 5 Aug 2024 107th dokutan 951 70 9 Aug 2024 107th jatloe 951 70 26 Aug 2024 107th lgrandco 951 70 9 Oct 2024 107th snydej 951 70 21 Nov 2024 107th erikji 951 70 4 Feb 2025 107th CutSandstone 951 70 4 Feb 2025 107th Mukundan314 951 70 3 Apr 2025 107th albanian-laundromat 951 70 12 Apr 2025 107th xsot 🇸🇬 951 70 3 May 2025 107th moustave 951 70 9 hours ago 172nd Lydxn 🇨🇦 951 89 6 May 2022 172nd JayXon 🇺🇸 951 89 7 May 2022 172nd nwellnhof 🇩🇪 951 89 5 Jun 2022 172nd snyderek 🇺🇸 951 89 19 Feb 2025 176th ovs-code 🇩🇪 949 61 5 Aug 2024 177th Lydxn 🇨🇦 948 59 6 May 2022 178th Lydxn 🇨🇦 947 55 16 Jan 2024 178th ovs-code 🇩🇪 947 55 16 Jan 2024 178th Steffan153 🇫🇮 947 55 16 Jan 2024 178th kg583 🇺🇸 947 55 16 Feb 2024 178th Shanethegamer 🇺🇸 947 55 24 Mar 2024 178th pardouin 🇫🇷 947 55 30 Jun 2024 178th JayXon 🇺🇸 947 55 17 Aug 2024 178th sean-niemann 🇺🇸 947 55 24 Jan 2025 186th primo-ppcg 🇹🇭 946 49 5 May 2022 186th Lydxn 🇨🇦 946 49 8 May 2022 188th saito-ta 🇯🇵 943 49 13 May 2022 188th Lydxn 🇨🇦 943 49 28 May 2022 190th JayXon 🇺🇸 943 88 17 Oct 2022 191st lyphyser 942 46 13 Jan 2024 191st AdrienHache 🇫🇷 942 46 9 Apr 2024 193rd JayXon 🇺🇸 942 69 17 Oct 2022 193rd Lydxn 🇨🇦 942 69 4 Feb 2023 195th canissimia 🇦🇶 940 50 5 May 2022 195th ovs-code 🇩🇪 940 50 7 May 2022 195th sisyphus-ppcg 🇦🇺 940 50 20 Feb 2023 195th Steffan153 🇫🇮 940 50 20 Jul 2024 199th namelessiw 940 83 9 Apr 2025 199th dokutan 940 83 9 Apr 2025 199th m-tkach 🇺🇦 940 83 10 Apr 2025 199th DialFrost 🇸🇬 940 83 10 Apr 2025 199th Pecanolith 940 83 19 Apr 2025 199th Tyrant7 940 83 19 Apr 2025 199th Yax42 🇫🇷 940 83 19 Apr 2025 206th canissimia 🇦🇶 939 51 6 May 2022 206th Lydxn 🇨🇦 939 51 6 May 2022 206th primo-ppcg 🇹🇭 939 51 6 May 2022 206th pardouin 🇫🇷 939 51 12 Apr 2025 210th primo-ppcg 🇹🇭 938 58 13 Nov 2022 210th clockworknazo 938 58 15 Nov 2022 210th Lydxn 🇨🇦 938 58 7 Feb 2023 210th xsot 🇸🇬 938 58 28 Jun 2024 210th Salutations45 938 58 18 Dec 2024 215th TFeld00 🇩🇰 938 71 17 May 2022 215th DialFrost 🇸🇬 938 71 15 Nov 2022 215th StefanHabel 🇨🇦 938 71 29 Nov 2022 215th nstearns96 🇬🇧 938 71 11 Jan 2023 215th hallvabo 🇳🇴 938 71 7 Feb 2023 215th anter69 🇭🇺 938 71 21 May 2024 215th rucin93 🇵🇱 938 71 10 Jul 2024 222nd Lydxn 🇨🇦 938 125 6 May 2022 222nd JayXon 🇺🇸 938 125 9 May 2022 224th grey0ut 937 48 8 Apr 2025 225th GolfingSuccess 🇬🇷 937 49 12 Aug 2024 Prev 151–225 of 3,079 Next