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 298th xsot 🇸🇬 932 60 1 May 2025 302nd MeWhenI 🇻🇦 931 68 23 Feb 2023 302nd JayXon 🇺🇸 931 68 4 Mar 2025 304th m-tkach 🇺🇦 931 91 5 May 2022 304th 09cf 931 91 4 Oct 2023 306th GrayJoKing 🇦🇺 930 56 15 Jan 2024 306th AlephSquirrel 930 56 21 Jan 2024 308th ovs-code 🇩🇪 930 60 9 Oct 2023 308th GrayJoKing 🇦🇺 930 60 11 Oct 2023 308th Lydxn 🇨🇦 930 60 11 Oct 2023 308th GolfingSuccess 🇬🇷 930 60 16 Nov 2023 308th Steffan153 🇫🇮 930 60 28 Jan 2024 308th JayXon 🇺🇸 930 60 29 Jan 2024 308th rucin93 🇵🇱 930 60 10 Jul 2024 308th sean-niemann 🇺🇸 930 60 10 Jul 2024 316th GrayJoKing 🇦🇺 930 70 13 Jul 2024 316th FlyingPenguin223 930 70 4 Oct 2024 316th jipsong 🇩🇪 930 70 5 Apr 2025 319th Natanaelel 🇸🇪 929 28 22 Jul 2022 319th SirBogman 🇺🇸 929 28 17 Sep 2022 321st Lydxn 🇨🇦 929 70 17 Oct 2022 321st JayXon 🇺🇸 929 70 17 Oct 2022 323rd sisyphus-ppcg 🇦🇺 928 50 31 Jan 2023 323rd saito-ta 🇯🇵 928 50 12 Dec 2024 325th Steffan153 🇫🇮 928 67 19 Aug 2024 325th JayXon 🇺🇸 928 67 19 Aug 2024 327th JayXon 🇺🇸 927 57 19 Aug 2024 328th roavin 927 84 23 Jun 2022 328th tkr-sh 🇫🇷 927 84 20 Aug 2022 328th Nickmiste 927 84 9 Nov 2022 328th Matgc04 927 84 19 May 2023 328th postie77 927 84 19 May 2023 328th ertz1ertz 927 84 13 Sep 2024 328th Grabnukebomb 927 84 13 Sep 2024 328th Shanethegamer 🇺🇸 927 84 9 Apr 2025 328th HumanoidCPU 927 84 10 Apr 2025 328th annaproxy 927 84 11 Apr 2025 328th Re-Adventures 🇮🇳 927 84 15 Apr 2025 328th janbehrens 🇩🇪 927 84 17 Apr 2025 340th scpchicken 🇵🇼 926 72 4 May 2022 340th sultan 926 72 6 Jun 2022 340th annaproxy 926 72 22 Aug 2022 340th BlankSpruce 926 72 9 Sep 2022 340th ValentinCassayre 926 72 8 Oct 2022 340th commandblockguy 🇺🇸 926 72 3 Nov 2022 340th mathb0y512 926 72 1 Dec 2022 340th NoahBolohan 🇨🇦 926 72 28 Feb 2023 340th neel11235813 926 72 8 Mar 2023 340th Kacarott 🇦🇺 926 72 24 Mar 2023 340th Fracture17 926 72 8 Apr 2023 340th ayushdewan 926 72 7 May 2023 340th PeterTillema 🇳🇱 926 72 17 Oct 2023 340th Glinte 926 72 11 Dec 2023 340th nanatsu8 926 72 11 May 2024 340th thej10n 926 72 12 Jun 2024 340th duckyluuk 🇳🇱 926 72 13 Jun 2024 340th tobeannouncd 926 72 25 Apr 2025 340th YAJUE114514 926 72 15 Aug 2025 359th ovs-code 🇩🇪 925 67 13 Dec 2022 359th Steffan153 🇫🇮 925 67 18 Dec 2022 359th Lydxn 🇨🇦 925 67 4 Feb 2023 359th sean-niemann 🇺🇸 925 67 7 Mar 2025 363rd Lydxn 🇨🇦 924 108 6 May 2022 363rd JayXon 🇺🇸 924 108 9 May 2022 365th Bubbler-4 923 33 6 May 2022 365th rak1507 🇬🇧 923 33 8 May 2022 365th ngn 🇧🇬 923 33 11 May 2022 365th zacjl 923 33 3 Jun 2025 365th GrayJoKing 🇦🇺 923 33 4 Jun 2025 370th btnlq 923 59 6 Nov 2022 371st Lydxn 🇨🇦 923 90 6 May 2022 371st kumavale 923 90 21 days ago 373rd nwellnhof 🇩🇪 922 51 4 May 2022 373rd primo-ppcg 🇹🇭 922 51 6 May 2022 373rd janlelis 922 51 10 May 2022 Prev 301–375 of 3,340 Next