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 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 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 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 Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth 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 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 Erlang 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 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 Erlang 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 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 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 Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Bytes Time 299th MeWhenI 🇻🇦 932 126 4 May 2022 299th janbehrens 🇩🇪 932 126 4 May 2022 299th shellbertt 🇨🇦 932 126 4 May 2022 299th inventshah 932 126 4 May 2022 299th m-tkach 🇺🇦 932 126 4 May 2022 299th sean-niemann 🇺🇸 932 126 4 May 2022 299th nwellnhof 🇩🇪 932 126 4 May 2022 299th Shanethegamer 🇺🇸 932 126 4 May 2022 299th ScottHamper 932 126 5 May 2022 299th ovs-code 🇩🇪 932 126 5 May 2022 299th 5quiwyrm 932 126 4 Sep 2022 299th KrausRaus 🇺🇸 932 126 9 Sep 2022 299th Betuaredead 932 126 5 Jan 2023 299th annaproxy 932 126 7 Jan 2023 299th Yewzir 🇧🇪 932 126 12 Feb 2023 299th Jacob385 932 126 4 Mar 2024 299th dokutan 932 126 17 Mar 2024 299th eMGeeneer 932 126 15 Jun 2024 299th mrondon8 932 126 2 Dec 2024 299th plastic-bottle 932 126 27 Aug 2025 321st MeWhenI 🇻🇦 931 68 23 Feb 2023 321st JayXon 🇺🇸 931 68 4 Mar 2025 323rd m-tkach 🇺🇦 931 91 5 May 2022 323rd 09cf 931 91 4 Oct 2023 325th GrayJoKing 🇦🇺 930 56 15 Jan 2024 325th AlephSquirrel 930 56 21 Jan 2024 327th ovs-code 🇩🇪 930 60 9 Oct 2023 327th GrayJoKing 🇦🇺 930 60 11 Oct 2023 327th Lydxn 🇨🇦 930 60 11 Oct 2023 327th GolfingSuccess 🇬🇷 930 60 16 Nov 2023 327th Steffan153 🇫🇮 930 60 28 Jan 2024 327th JayXon 🇺🇸 930 60 29 Jan 2024 327th rucin93 🇵🇱 930 60 10 Jul 2024 327th sean-niemann 🇺🇸 930 60 10 Jul 2024 335th GrayJoKing 🇦🇺 930 70 13 Jul 2024 335th FlyingPenguin223 930 70 4 Oct 2024 335th jipsong 🇩🇪 930 70 5 Apr 2025 338th Natanaelel 🇸🇪 929 28 22 Jul 2022 338th SirBogman 🇺🇸 929 28 17 Sep 2022 340th Lydxn 🇨🇦 929 70 17 Oct 2022 340th JayXon 🇺🇸 929 70 17 Oct 2022 342nd sisyphus-ppcg 🇦🇺 928 50 31 Jan 2023 342nd saito-ta 🇯🇵 928 50 12 Dec 2024 344th Steffan153 🇫🇮 928 67 19 Aug 2024 344th JayXon 🇺🇸 928 67 19 Aug 2024 346th JayXon 🇺🇸 927 57 19 Aug 2024 347th roavin 927 84 23 Jun 2022 347th tkr-sh 🇫🇷 927 84 20 Aug 2022 347th Nickmiste 927 84 9 Nov 2022 347th Matgc04 927 84 19 May 2023 347th postie77 927 84 19 May 2023 347th ertz1ertz 927 84 13 Sep 2024 347th Grabnukebomb 927 84 13 Sep 2024 347th Shanethegamer 🇺🇸 927 84 9 Apr 2025 347th HumanoidCPU 927 84 10 Apr 2025 347th annaproxy 927 84 11 Apr 2025 347th Re-Adventures 🇮🇳 927 84 15 Apr 2025 347th janbehrens 🇩🇪 927 84 17 Apr 2025 359th scpchicken 🇵🇼 926 72 4 May 2022 359th sultan 926 72 6 Jun 2022 359th annaproxy 926 72 22 Aug 2022 359th BlankSpruce 926 72 9 Sep 2022 359th ValentinCassayre 926 72 8 Oct 2022 359th commandblockguy 🇺🇸 926 72 3 Nov 2022 359th mathb0y512 926 72 1 Dec 2022 359th NoahBolohan 🇨🇦 926 72 28 Feb 2023 359th neel11235813 926 72 8 Mar 2023 359th Kacarott 🇦🇺 926 72 24 Mar 2023 359th Fracture17 926 72 8 Apr 2023 359th ayushdewan 926 72 7 May 2023 359th PeterTillema 🇳🇱 926 72 17 Oct 2023 359th Glinte 926 72 11 Dec 2023 359th nanatsu8 926 72 11 May 2024 359th thej10n 926 72 12 Jun 2024 359th duckyluuk 🇳🇱 926 72 13 Jun 2024 Prev 301–375 of 3,338 Next