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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 900th GreenBeansAgainstVeganism 863 62 13ms 13 Jan 2023 900th arctouch-cristiannevianna 863 62 12ms 3 Apr 2023 900th Corxldyphik 863 62 11ms 11 Apr 2023 900th Blockyheadman 863 62 15ms 1 Nov 2023 900th ollyspooner 863 62 11ms 22 Nov 2023 900th itserasmus 863 62 13ms 25 Jan 2024 900th Jacob385 863 62 11ms 13 Mar 2024 900th junkondo-jp 863 62 12ms 30 Jun 2024 900th ShiraJoseph 🇺🇸 863 62 11ms 1 Mar 2025 900th tomh1012 863 62 11ms 3 Dec 2025 900th scpchicken 🇵🇼 863 62 11ms 3 days ago 912th Shanethegamer 🇺🇸 863 70 105ms 12 Dec 2022 912th Alessandro-Balconi 🇮🇹 863 70 106ms 26 Dec 2022 914th emgordon154 863 160 1,737ms 24 Dec 2025 914th DialFrost 🇸🇬 863 160 1,683ms 17 Jan 2026 916th NewDefectus 🇮🇱 862 73 2ms 6 May 2022 916th Natanaelel 🇸🇪 862 73 2ms 15 Jun 2022 916th LorenzoDeGaspari 862 73 2ms 27 May 2024 916th Bpc-CPU 862 73 2ms 12 Jul 2025 916th AZTECCO 862 73 2ms 16 Sep 2025 916th CaedenHarper 🇨🇦 862 73 2ms 28 Sep 2025 916th prestosilver 🇺🇸 862 73 2ms 3 Dec 2025 916th albanian-laundromat 🇺🇸 862 73 3ms 20 Jan 2026 916th madex 🇩🇪 862 73 2ms 16 days ago 925th aditsu 862 77 2,433ms 23 Nov 2025 926th frankgraziano 862 198 108ms 14 Oct 2025 927th o0lit3 🇺🇸 861 54 7ms 22 Jun 2023 927th Natanaelel 🇸🇪 861 54 7ms 10 Feb 2025 929th stefangimmillaro 861 112 341ms 26 Sep 2023 929th kkoenig 861 112 319ms 4 Jan 2024 931st Yewzir 🇧🇪 860 65 4ms 9 Oct 2023 931st MeWhenI 🇻🇦 860 65 4ms 10 Oct 2023 933rd Liibe 860 97 562ms 25 Sep 2025 934th sultan 859 72 24ms 6 Jun 2022 934th annaproxy 859 72 24ms 22 Aug 2022 934th BlankSpruce 859 72 24ms 9 Sep 2022 934th ValentinCassayre 859 72 21ms 8 Oct 2022 934th mathb0y512 859 72 24ms 1 Dec 2022 934th NoahBolohan 🇨🇦 859 72 24ms 28 Feb 2023 934th neel11235813 859 72 23ms 8 Mar 2023 934th Kacarott 🇦🇺 859 72 16ms 24 Mar 2023 934th Fracture17 859 72 20ms 8 Apr 2023 934th ayushdewan 859 72 24ms 7 May 2023 934th PeterTillema 🇳🇱 859 72 25ms 17 Oct 2023 934th Glinte 859 72 25ms 11 Dec 2023 934th nanatsu8 859 72 25ms 11 May 2024 934th thej10n 859 72 19ms 12 Jun 2024 934th tobeannouncd 859 72 19ms 25 Apr 2025 934th YAJUE114514 859 72 17ms 15 Aug 2025 934th madex 🇩🇪 859 72 25ms 15 Mar 2026 934th solisolu 859 72 19ms 15 days ago 952nd DialFrost 🇸🇬 859 86 1,476ms 10 Mar 2025 953rd henrydukepickle 858 97 132ms 8 Jul 2025 954th yeminghan2021 858 99 57ms 3 Feb 2025 955th SirBogman 🇺🇸 857 55 39ms 5 May 2022 955th olivermrose 🇺🇸 857 55 43ms 6 May 2022 955th 4hg 🇺🇸 857 55 45ms 24 Aug 2022 955th DialFrost 🇸🇬 857 55 45ms 1 Jan 2023 955th error256 857 55 43ms 4 May 2024 960th JayXon 🇺🇸 857 56 1,322ms 9 May 2022 961st eshilo-draper 857 91 425ms 4 Sep 2022 961st ericlangedijk 🇸🇮 857 91 437ms 23 May 2023 961st KatieLG 🇬🇧 857 91 413ms 30 Apr 2024 961st Mikey-Beep 🇬🇧 857 91 365ms 3 Sep 2024 965th DialFrost 🇸🇬 856 61 543ms 21 Jan 2024 966th mtirado1 856 74 94ms 24 Dec 2022 966th Betuaredead 856 74 88ms 6 Jan 2023 966th KatieLG 🇬🇧 856 74 94ms 15 Jan 2023 966th bwat2 856 74 87ms 31 Mar 2023 966th stackotter 856 74 91ms 29 May 2023 966th ovs-code 🇩🇪 856 74 93ms 17 Apr 2024 972nd Shanethegamer 🇺🇸 856 99 25ms 27 Apr 2023 973rd ovs-code 🇩🇪 855 85 14ms 11 Dec 2023 974th ovs-code 🇩🇪 854 62 138ms 3 Aug 2024 974th MeWhenI 🇻🇦 854 62 144ms 25 Oct 2024 974th Shanethegamer 🇺🇸 854 62 142ms 19 Dec 2024 977th Shanethegamer 🇺🇸 854 85 429ms 18 May 2022 977th GrayJoKing 🇦🇺 854 85 407ms 20 May 2022 979th retrohun 853 64 4ms 6 Nov 2022 979th Re-Adventures 🇮🇳 853 64 4ms 7 Nov 2022 979th stellartux 853 64 4ms 26 Dec 2023 979th bac0id 853 64 4ms 29 Jun 2024 979th snoozingnewt 🇨🇦 853 64 4ms 1 Sep 2024 979th albanian-laundromat 🇺🇸 853 64 4ms 22 Sep 2025 985th the-zammers 853 68 165ms 2 Oct 2023 986th lynn 853 96 29ms 11 Jul 2023 987th JRaspass 🇬🇧 852 46 431ms 4 May 2022 987th Natanaelel 🇸🇪 852 46 437ms 4 May 2022 989th janAkali 🇷🇺 852 77 137ms 12 Feb 2025 990th MeWhenI 🇻🇦 852 162 1,710ms 7 days ago 991st MeWhenI 🇻🇦 851 71 111ms 13 Dec 2022 992nd inventshah 851 74 2ms 4 May 2022 992nd undersquire 851 74 2ms 24 Jun 2023 992nd rdmsr 851 74 2ms 24 Jun 2023 992nd Bmrl7 851 74 2ms 9 Jul 2023 992nd Vinterion 851 74 2ms 6 Nov 2023 997th Schmitt-Very-Cool 851 98 456ms 26 Sep 2025 998th randolchance 850 63 12ms 8 Jan 2023 998th CatsAreFluffy 850 63 14ms 18 Feb 2023 998th amiralitaheri 850 63 13ms 23 Feb 2023 First Prev 901–1,000 of 3,779 Next Last