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 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 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 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 NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi 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 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 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 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 NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi Turtle Tutorial # Golfer Points Bytes Time Submitted 297th Shanethegamer 🇺🇸 936 89 415ms 25 Sep 2025 297th nwellnhof 🇩🇪 936 89 425ms 25 Sep 2025 297th m-tkach 🇺🇦 936 89 364ms 25 Sep 2025 297th namelessiw 936 89 357ms 2 Oct 2025 297th Yewzir 🇧🇪 936 89 345ms 2 Oct 2025 297th Yax42 🇫🇷 936 89 356ms 4 Oct 2025 297th stefangimmillaro 936 89 352ms 6 Oct 2025 297th CaedenHarper 🇨🇦 936 89 353ms 26 days ago 297th Jacob385 936 89 365ms 8 days ago 310th nwellnhof 🇩🇪 933 42 343ms 4 May 2022 310th Lydxn 🇨🇦 933 42 1,762ms 4 May 2022 310th GrayJoKing 🇦🇺 933 42 418ms 4 May 2022 310th Steffan153 🇫🇮 933 42 357ms 16 Dec 2022 310th sisyphus-ppcg 🇦🇺 933 42 362ms 31 Jan 2023 310th ovs-code 🇩🇪 933 42 513ms 30 Dec 2023 310th sean-niemann 🇺🇸 933 42 339ms 8 Mar 2025 317th emplv 🇱🇻 933 60 9ms 5 May 2022 317th GrayJoKing 🇦🇺 933 60 9ms 6 May 2022 317th targrik 933 60 10ms 24 Dec 2024 317th xsot 🇸🇬 933 60 9ms 1 May 2025 321st m-tkach 🇺🇦 932 91 63ms 5 May 2022 321st 09cf 932 91 63ms 4 Oct 2023 323rd GrayJoKing 🇦🇺 931 56 416ms 15 Jan 2024 323rd AlephSquirrel 931 56 704ms 21 Jan 2024 325th MeWhenI 🇻🇦 931 68 105ms 23 Feb 2023 325th JayXon 🇺🇸 931 68 104ms 4 Mar 2025 327th ovs-code 🇩🇪 930 60 7ms 9 Oct 2023 327th GrayJoKing 🇦🇺 930 60 5ms 11 Oct 2023 327th Lydxn 🇨🇦 930 60 7ms 11 Oct 2023 327th GolfingSuccess 🇬🇷 930 60 5ms 16 Nov 2023 327th Steffan153 🇫🇮 930 60 5ms 28 Jan 2024 327th JayXon 🇺🇸 930 60 5ms 29 Jan 2024 327th rucin93 🇵🇱 930 60 5ms 10 Jul 2024 327th sean-niemann 🇺🇸 930 60 5ms 10 Jul 2024 335th Lydxn 🇨🇦 930 70 106ms 17 Oct 2022 335th JayXon 🇺🇸 930 70 110ms 17 Oct 2022 335th GrayJoKing 🇦🇺 930 70 3ms 13 Jul 2024 335th FlyingPenguin223 930 70 4ms 4 Oct 2024 335th jipsong 🇩🇪 930 70 6ms 5 Apr 2025 340th Natanaelel 🇸🇪 929 28 193ms 22 Jul 2022 340th SirBogman 🇺🇸 929 28 175ms 17 Sep 2022 342nd Steffan153 🇫🇮 929 67 37ms 19 Aug 2024 342nd JayXon 🇺🇸 929 67 53ms 19 Aug 2024 344th sisyphus-ppcg 🇦🇺 928 50 2,856ms 31 Jan 2023 344th saito-ta 🇯🇵 928 50 890ms 12 Dec 2024 346th JayXon 🇺🇸 928 57 166ms 19 Aug 2024 347th roavin 927 84 338ms 23 Jun 2022 347th tkr-sh 🇰🇵 927 84 330ms 20 Aug 2022 347th Nickmiste 927 84 360ms 9 Nov 2022 347th Matgc04 927 84 396ms 19 May 2023 347th postie77 927 84 358ms 19 May 2023 347th ertz1ertz 927 84 364ms 13 Sep 2024 347th Grabnukebomb 927 84 374ms 13 Sep 2024 347th Shanethegamer 🇺🇸 927 84 342ms 9 Apr 2025 347th HumanoidCPU 927 84 370ms 10 Apr 2025 347th annaproxy 927 84 340ms 11 Apr 2025 347th Re-Adventures 🇮🇳 927 84 335ms 15 Apr 2025 347th janbehrens 🇩🇪 927 84 352ms 17 Apr 2025 347th Flix7dev 🇧🇪 927 84 410ms 14 days ago 360th scpchicken 🇵🇼 926 72 21ms 4 May 2022 360th sultan 926 72 16ms 6 Jun 2022 360th annaproxy 926 72 23ms 22 Aug 2022 360th BlankSpruce 926 72 40ms 9 Sep 2022 360th ValentinCassayre 926 72 21ms 8 Oct 2022 360th commandblockguy 🇺🇸 926 72 23ms 3 Nov 2022 360th mathb0y512 926 72 27ms 1 Dec 2022 360th NoahBolohan 🇨🇦 926 72 23ms 28 Feb 2023 360th neel11235813 926 72 22ms 8 Mar 2023 360th Kacarott 🇦🇺 926 72 17ms 24 Mar 2023 360th Fracture17 926 72 21ms 8 Apr 2023 360th ayushdewan 926 72 29ms 7 May 2023 360th PeterTillema 🇳🇱 926 72 22ms 17 Oct 2023 360th Glinte 926 72 35ms 11 Dec 2023 360th nanatsu8 926 72 26ms 11 May 2024 360th thej10n 926 72 23ms 12 Jun 2024 First Prev 301–375 of 3,423 Next Last