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Collatz in all languages in bytes. Achievements Cheevos Holes Languages Medals Miscellaneous 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 Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Multitap Input 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 Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Dragon Curve Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Nim Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang 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 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> ALGOL 68 ArkScript Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang 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 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily 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 Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Multitap Input 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 Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Dragon Curve Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Nim Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 646th erikji 884 70 21ms 4 Feb 2025 646th CutSandstone 884 70 19ms 4 Feb 2025 646th albanian-laundromat 🇺🇸 884 70 21ms 12 Apr 2025 646th xsot 🇸🇬 884 70 23ms 3 May 2025 646th fuzzylojik-golf 🇺🇸 884 70 21ms 14 Jun 2025 646th smilesformiles3 884 70 22ms 14 Jun 2025 646th KasperKivimaeki 🇫🇮 884 70 20ms 30 Jun 2025 646th adaGrad1 884 70 20ms 10 Aug 2025 646th EthanJantz 884 70 21ms 10 Aug 2025 646th qpwoeirut 884 70 16ms 10 Aug 2025 646th katss2 884 70 19ms 17 Aug 2025 646th intgrah 884 70 21ms 23 Sep 2025 646th ryyyn 🇺🇸 884 70 23ms 29 Oct 2025 646th luuumine 🇫🇷 884 70 20ms 3 Nov 2025 646th Babafaba 884 70 19ms 7 Nov 2025 646th commandz0 🇺🇸 884 70 20ms 16 Nov 2025 646th hellopir2 884 70 20ms 23 Nov 2025 646th bzijlema 🇳🇱 884 70 21ms 3 Dec 2025 646th blaztoma 🇱🇹 884 70 23ms 16 Feb 2026 646th firegene 🇮🇪 884 70 20ms 25 Feb 2026 646th Googolplexo 🇷🇺 884 70 19ms 25 Mar 2026 646th edsrzf 🇳🇿 884 70 23ms 21 days ago 646th Mikey-Beep 🇬🇧 884 70 31ms 19 days ago 724th Steffan153 🇫🇮 884 75 2,676ms 23 days ago 725th sean-niemann 🇺🇸 884 109 335ms 25 May 2024 725th GolfingSuccess 🇬🇷 884 109 340ms 6 Sep 2025 725th edsrzf 🇳🇿 884 109 330ms 21 days ago 728th Shanethegamer 🇺🇸 883 51 474ms 15 May 2023 729th GrayJoKing 🇦🇺 883 84 35ms 19 Jun 2022 729th primo-ppcg 🇹🇭 883 84 36ms 29 Jun 2022 729th MeWhenI 🇻🇦 883 84 38ms 30 Dec 2025 732nd emgordon154 883 97 117ms 3 Dec 2025 733rd GrayJoKing 🇦🇺 882 60 144ms 24 Oct 2024 734th Shanethegamer 🇺🇸 882 73 145ms 8 May 2025 734th DialFrost 🇸🇬 882 73 149ms 3 Jun 2025 734th edsrzf 🇳🇿 882 73 144ms 4 Jul 2025 737th primo-ppcg 🇹🇭 882 193 107ms 14 Aug 2025 738th Shanethegamer 🇺🇸 881 142 1,195ms 27 Mar 2025 738th DialFrost 🇸🇬 881 142 1,201ms 28 Mar 2025 738th emgordon154 881 142 1,224ms 10 Apr 2025 738th GolfingSuccess 🇬🇷 881 142 1,214ms 6 Dec 2025 742nd dokutan 880 62 5ms 28 Apr 2025 743rd johnnythedoggie 880 72 102ms 13 May 2022 743rd kaascevich 880 72 104ms 8 Jul 2025 743rd madeforlosers 880 72 97ms 17 Mar 2026 746th CaedenHarper 🇨🇦 879 54 875ms 27 Sep 2025 746th sean-niemann 🇺🇸 879 54 924ms 27 Sep 2025 746th albanian-laundromat 🇺🇸 879 54 920ms 14 Nov 2025 746th xsot 🇸🇬 879 54 916ms 15 Nov 2025 750th Shanethegamer 🇺🇸 878 66 172ms 4 May 2022 750th scpchicken 🇵🇼 878 66 254ms 5 May 2022 750th sisyphus-ppcg 🇦🇺 878 66 173ms 6 May 2022 750th Natanaelel 🇸🇪 878 66 144ms 15 Jun 2022 750th Z-snails 878 66 254ms 27 Feb 2023 750th Jeremy-Stafford 878 66 258ms 27 Feb 2023 750th alomiF 878 66 287ms 1 Sep 2023 750th btnlq 878 66 145ms 17 Oct 2023 750th Shengxuan-Zhang 878 66 278ms 20 Feb 2026 759th DialFrost 🇸🇬 878 86 40ms 24 Oct 2024 759th stefangimmillaro 878 86 39ms 14 Jan 2025 761st madeforlosers 878 95 450ms 17 days ago 762nd kg583 🇺🇸 878 105 11ms 14 Mar 2026 762nd Steffan153 🇫🇮 878 105 12ms 19 Mar 2026 764th c0d3-4-F00d 🇩🇪 877 61 12ms 6 May 2022 764th jackkav 877 61 11ms 26 Jun 2022 764th TechNolaByte 877 61 12ms 6 Jul 2022 764th Heathcorp 🇦🇺 877 61 12ms 17 Jul 2022 764th C0de5mith 🇺🇸 877 61 13ms 3 Aug 2022 764th sebipopa 🇷🇴 877 61 11ms 18 Aug 2022 764th moikaturns 🇬🇧 877 61 13ms 25 Sep 2022 764th FlorianCassayre 🇫🇷 877 61 12ms 27 Sep 2022 764th Mazn3k 877 61 13ms 1 Feb 2023 764th tvcv901 877 61 12ms 22 Mar 2023 764th unfinishedprogram 877 61 12ms 19 Jul 2023 764th snoozingnewt 🇨🇦 877 61 11ms 23 Sep 2023 764th funnyboy-roks 877 61 12ms 9 May 2024 764th bac0id 877 61 15ms 29 Jun 2024 764th FortuiteMan 🇫🇷 877 61 12ms 10 Oct 2024 764th RobertHoeh 877 61 13ms 5 Apr 2025 764th LvLError 877 61 11ms 29 May 2025 764th miles-evan 877 61 22ms 5 Aug 2025 764th alexsave 877 61 11ms 13 Oct 2025 764th ComradeSquirrel 877 61 11ms 21 days ago 784th nwellnhof 🇩🇪 876 53 6ms 4 May 2022 784th GrayJoKing 🇦🇺 876 53 7ms 6 May 2022 786th c0d3-4-F00d 🇩🇪 876 89 407ms 5 May 2022 786th fkantelberg 876 89 467ms 15 Jul 2023 786th TRexOnGit 876 89 387ms 16 Feb 2024 789th inventshah 876 97 58ms 6 May 2022 789th emgordon154 876 97 60ms 8 Feb 2026 791st MeWhenI 🇻🇦 876 110 346ms 9 Feb 2023 791st targrik 876 110 340ms 30 Jun 2025 793rd DialFrost 🇸🇬 875 69 110ms 15 Jul 2024 794th AlephSquirrel 875 80 12ms 20 Apr 2023 794th ashtraypettingzoo 🇺🇸 875 80 14ms 1 Apr 2024 796th Irratix 🇳🇱 874 72 2ms 4 May 2022 796th m-tkach 🇺🇦 874 72 2ms 4 May 2022 796th jared-hughes 874 72 2ms 6 Jul 2022 796th michael-pruglo 🇺🇦 874 72 2ms 13 Jul 2022 796th Steffan153 🇫🇮 874 72 2ms 3 Jan 2023 First Prev 701–800 of 3,689 Next Last