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 301st MeWhenI 🇻🇦 928 68 23 Feb 2023 301st JayXon 🇺🇸 928 68 4 Mar 2025 303rd Lydxn 🇨🇦 928 70 17 Oct 2022 303rd JayXon 🇺🇸 928 70 17 Oct 2022 303rd GrayJoKing 🇦🇺 928 70 13 Jul 2024 303rd FlyingPenguin223 928 70 4 Oct 2024 303rd jipsong 🇩🇪 928 70 5 Apr 2025 308th sisyphus-ppcg 🇦🇺 927 50 31 Jan 2023 308th saito-ta 🇯🇵 927 50 12 Dec 2024 310th JayXon 🇺🇸 927 57 19 Aug 2024 311th Steffan153 🇫🇮 927 67 19 Aug 2024 311th JayXon 🇺🇸 927 67 19 Aug 2024 313th scpchicken 🇵🇼 925 72 4 May 2022 313th sultan 925 72 6 Jun 2022 313th annaproxy 925 72 22 Aug 2022 313th BlankSpruce 925 72 9 Sep 2022 313th ValentinCassayre 925 72 8 Oct 2022 313th commandblockguy 🇺🇸 925 72 3 Nov 2022 313th mathb0y512 925 72 1 Dec 2022 313th NoahBolohan 🇨🇦 925 72 28 Feb 2023 313th neel11235813 925 72 8 Mar 2023 313th Kacarott 🇦🇺 925 72 24 Mar 2023 313th Fracture17 925 72 8 Apr 2023 313th ayushdewan 925 72 7 May 2023 313th PeterTillema 🇳🇱 925 72 17 Oct 2023 313th Glinte 925 72 11 Dec 2023 313th nanatsu8 925 72 11 May 2024 313th thej10n 925 72 12 Jun 2024 313th duckyluuk 🇳🇱 925 72 13 Jun 2024 313th fuzzylojik-golf 🇺🇸 925 72 14 Feb 2025 313th tobeannouncd 925 72 25 Apr 2025 332nd Bubbler-4 923 33 6 May 2022 332nd rak1507 🇬🇧 923 33 8 May 2022 332nd ngn 🇧🇬 923 33 11 May 2022 332nd zacjl 923 33 2 days ago 332nd GrayJoKing 🇦🇺 923 33 29 hours ago 337th Luca2812 923 127 12 Dec 2022 337th plastic-bottle 923 127 13 Sep 2023 337th h3ra993huskp 🇯🇵 923 127 17 Sep 2023 337th tigerdan2 🇩🇪 923 127 19 Dec 2023 341st btnlq 922 59 6 Nov 2022 342nd ovs-code 🇩🇪 922 67 13 Dec 2022 342nd Steffan153 🇫🇮 922 67 18 Dec 2022 342nd Lydxn 🇨🇦 922 67 4 Feb 2023 342nd sean-niemann 🇺🇸 922 67 7 Mar 2025 346th Lydxn 🇨🇦 922 90 6 May 2022 347th Lydxn 🇨🇦 922 108 6 May 2022 347th JayXon 🇺🇸 922 108 9 May 2022 349th nwellnhof 🇩🇪 921 51 4 May 2022 349th primo-ppcg 🇹🇭 921 51 6 May 2022 349th radarek 🇵🇱 921 51 8 May 2022 349th janlelis 921 51 10 May 2022 349th Natanaelel 🇸🇪 921 51 2 Jun 2022 349th sean-niemann 🇺🇸 921 51 7 Mar 2025 355th uiamn 921 58 6 Sep 2022 355th 5quiwyrm 921 58 29 Sep 2022 355th alasdair-greenland 921 58 13 Jan 2023 358th Herbert00709 🇵🇱 920 92 17 Nov 2023 358th 4QT0R 920 92 23 Nov 2023 358th ovs-code 🇩🇪 920 92 3 Jun 2024 361st xnor-gate 919 63 20 Jan 2025 362nd MichalMarsalek 🇨🇿 919 71 5 May 2022 362nd Lydxn 🇨🇦 919 71 7 May 2022 362nd GrayJoKing 🇦🇺 919 71 8 May 2022 362nd JayXon 🇺🇸 919 71 8 May 2022 362nd Steffan153 🇫🇮 919 71 9 Mar 2023 362nd Shanethegamer 🇺🇸 919 71 15 May 2023 362nd MeWhenI 🇻🇦 919 71 8 Aug 2023 362nd sean-niemann 🇺🇸 919 71 9 Jan 2025 370th Steffan153 🇫🇮 919 76 15 May 2023 370th primo-ppcg 🇹🇭 919 76 15 May 2023 370th Lydxn 🇨🇦 919 76 22 May 2023 370th GrayJoKing 🇦🇺 919 76 24 Aug 2023 374th tomtheisen 🇺🇸 918 85 10 Apr 2025 375th primo-ppcg 🇹🇭 917 61 6 May 2022 Prev 301–375 of 3,079 Next