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 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 Binary Lambda Calculus Calendar Connect Four Continued Fractions Crossword 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 Taxicab 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 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 ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel 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 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 ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel 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 Binary Lambda Calculus Calendar Connect Four Continued Fractions Crossword 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 Taxicab Numbers Tower of Hanoi Turtle Tutorial # Golfer Points Bytes Time Submitted 901st DialFrost 🇸🇬 855 61 505ms 21 Jan 2024 902nd Shanethegamer 🇺🇸 855 99 27ms 27 Apr 2023 903rd ovs-code 🇩🇪 853 62 132ms 3 Aug 2024 903rd MeWhenI 🇻🇦 853 62 139ms 25 Oct 2024 903rd Shanethegamer 🇺🇸 853 62 135ms 19 Dec 2024 906th Shanethegamer 🇺🇸 853 85 462ms 18 May 2022 906th GrayJoKing 🇦🇺 853 85 432ms 20 May 2022 908th Shanethegamer 🇺🇸 853 98 108ms 15 Apr 2025 909th Grrisly 853 114 262ms 25 Mar 2024 909th albanian-laundromat 853 114 240ms 2 days ago 911th JRaspass 🇬🇧 852 46 344ms 4 May 2022 911th Natanaelel 🇸🇪 852 46 322ms 4 May 2022 913th the-zammers 852 68 188ms 2 Oct 2023 914th retrohun 851 64 6ms 6 Nov 2022 914th Re-Adventures 🇮🇳 851 64 5ms 7 Nov 2022 914th stellartux 851 64 5ms 26 Dec 2023 914th bac0id 851 64 5ms 29 Jun 2024 914th snoozingnewt 🇺🇸 851 64 6ms 1 Sep 2024 914th albanian-laundromat 851 64 5ms 22 Sep 2025 920th lynn 851 96 30ms 11 Jul 2023 921st Schmitt-Very-Cool 851 98 336ms 26 Sep 2025 922nd inventshah 850 74 4ms 4 May 2022 922nd undersquire 850 74 3ms 24 Jun 2023 922nd rdmsr 850 74 2ms 24 Jun 2023 922nd Bmrl7 850 74 3ms 9 Jul 2023 922nd Vinterion 850 74 3ms 6 Nov 2023 922nd Herbert00709 🇵🇱 850 74 2ms 22 Dec 2023 928th janAkali 🇷🇺 850 77 118ms 12 Feb 2025 929th krcs 🇵🇱 849 53 246ms 9 May 2022 929th ryanlanegit 849 53 243ms 19 Jun 2022 929th sisyphus-ppcg 🇦🇺 849 53 402ms 15 Aug 2022 932nd randolchance 849 63 10ms 8 Jan 2023 932nd CatsAreFluffy 849 63 10ms 18 Feb 2023 932nd amiralitaheri 849 63 10ms 23 Feb 2023 932nd RuyiLi 849 63 10ms 1 Apr 2023 932nd TaserTheFox 🇺🇸 849 63 10ms 25 May 2023 932nd pfysches-boop 849 63 10ms 6 Aug 2023 932nd mhgockel 849 63 10ms 19 Aug 2023 932nd NickTheEASDude 🇺🇸 849 63 10ms 18 Jan 2024 932nd 823126 849 63 11ms 14 Nov 2024 932nd Palladium02 849 63 9ms 12 May 2025 932nd 4very 849 63 10ms 10 Jun 2025 932nd Ultra814 849 63 9ms 21 Aug 2025 944th DialFrost 🇸🇬 848 66 95ms 7 Apr 2025 945th SirBogman 🇺🇸 848 89 51ms 4 May 2022 946th Shanethegamer 🇺🇸 848 98 123ms 26 Oct 2022 946th emgordon154 848 98 122ms 18 Feb 2025 948th jared-hughes 848 100 51ms 20 Jul 2022 948th ZakkkkAttackkkk 🇵🇭 848 100 54ms 10 Aug 2022 948th Walter225 848 100 52ms 25 Jul 2023 951st AdamHe17 847 73 22ms 31 May 2022 951st AliceFord 847 73 21ms 2 Jun 2022 951st Natanaelel 🇸🇪 847 73 16ms 16 Jun 2022 951st btjones0 847 73 23ms 21 Jun 2022 951st marcin7Cd 847 73 19ms 27 Jun 2022 951st tri1212 🇻🇳 847 73 20ms 18 Jul 2022 951st vhoulbreque 🇫🇷 847 73 19ms 18 Aug 2022 951st KatieLG 🇬🇧 847 73 24ms 29 Aug 2022 951st tkr-sh 🇰🇵 847 73 21ms 8 Sep 2022 951st jroscoe5 847 73 21ms 15 Sep 2022 951st fredrik-bakke 🇳🇴 847 73 20ms 18 Sep 2022 951st firegene 🇮🇪 847 73 19ms 27 Sep 2022 951st OhmNomNom 847 73 24ms 7 Oct 2022 951st 0-4849 847 73 23ms 1 Nov 2022 951st M0PKOBKA 847 73 23ms 19 Dec 2022 951st calumacutt 847 73 26ms 19 Dec 2022 951st thehylian 847 73 27ms 2 Jan 2023 951st fynnkroeger 847 73 32ms 6 Jan 2023 951st shellbertt 🇨🇦 847 73 22ms 13 Jan 2023 951st hunt-g 847 73 22ms 4 Feb 2023 951st ljweel 847 73 20ms 13 Feb 2023 951st jmerle 🇳🇱 847 73 20ms 16 Feb 2023 951st TaserTheFox 🇺🇸 847 73 26ms 14 Mar 2023 951st pinguicula 847 73 20ms 6 Apr 2023 951st TheoKeller1 847 73 27ms 11 Jun 2023 First Prev 901–975 of 3,489 Next Last
