Collatz in Python 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 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 Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator 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 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 ArkScript 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 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 ArkScript 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 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 Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator 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 146th thehylian 863 73 20ms 2 Jan 2023 146th fynnkroeger 863 73 22ms 6 Jan 2023 146th shellbertt 🇨🇦 863 73 20ms 13 Jan 2023 146th hunt-g 863 73 21ms 4 Feb 2023 146th ljweel 863 73 21ms 13 Feb 2023 146th jmerle 🇳🇱 863 73 20ms 16 Feb 2023 146th TaserTheFox 🇺🇸 863 73 20ms 14 Mar 2023 146th pinguicula 863 73 21ms 6 Apr 2023 146th TheoKeller1 863 73 24ms 11 Jun 2023 146th fkantelberg 863 73 19ms 16 Jul 2023 146th Mikey-Beep 🇬🇧 863 73 21ms 31 Aug 2023 146th eiburns 863 73 22ms 9 Oct 2023 146th htareque 863 73 21ms 13 Oct 2023 146th wearsunscreen 863 73 22ms 18 Oct 2023 146th Grrisly 863 73 20ms 10 Nov 2023 146th m42km 863 73 20ms 11 Nov 2023 146th GeneralPoxter 863 73 20ms 7 Dec 2023 146th logvp 863 73 24ms 12 Jan 2024 146th JoaoFelipe3 863 73 22ms 13 Jan 2024 146th ehulinsky 🇺🇸 863 73 21ms 16 Feb 2024 146th Lewenhaupt 863 73 19ms 23 Feb 2024 146th Yewzir 🇧🇪 863 73 18ms 5 Apr 2024 146th stertooy 🇧🇪 863 73 20ms 9 Jun 2024 146th cuboids 863 73 20ms 11 Jul 2024 146th jipsong 🇩🇪 863 73 20ms 23 Jul 2024 146th mattyhempstead 863 73 21ms 6 Oct 2024 146th wh3n3v3r 🇨🇿 863 73 20ms 18 Nov 2024 146th klixel 🇨🇦 863 73 20ms 18 Nov 2024 146th tjwrenn 863 73 20ms 10 Dec 2024 146th nullie 863 73 20ms 19 Dec 2024 146th maxgodfrey2004 🇨🇦 863 73 21ms 13 Feb 2025 146th lolgeny 863 73 19ms 22 Feb 2025 146th andrewjc2000 863 73 21ms 23 Feb 2025 146th Bulmenisaurus 863 73 23ms 2 Mar 2025 146th souta-1326 863 73 21ms 1 Apr 2025 146th BenjaminHGong 863 73 21ms 26 May 2025 146th FEZfan 🇦🇺 863 73 20ms 11 Jul 2025 146th wuduculfre 863 73 21ms 28 Jul 2025 146th BREMAUCY 🇫🇷 863 73 22ms 24 Aug 2025 146th FortuiteMan 🇫🇷 863 73 21ms 28 Sep 2025 146th miaoaixuan 863 73 21ms 30 Sep 2025 146th Lv0Sys 🇵🇱 863 73 25ms 7 Dec 2025 146th zacharysfrazee 863 73 21ms 11 Jan 2026 146th bpharaldsson 863 73 20ms 6 Feb 2026 205th TobyBoyne 🇬🇧 851 74 19ms 4 May 2022 205th RDShah 851 74 21ms 6 May 2022 205th Indivicivet 851 74 20ms 9 May 2022 205th CedricGebistorf 851 74 20ms 9 May 2022 205th ophact 851 74 22ms 11 May 2022 205th ImpressedByRocks 851 74 20ms 17 May 2022 205th LHuitre 851 74 19ms 2 Jun 2022 205th neihousaigaai 851 74 18ms 8 Jun 2022 205th rowboat1 851 74 20ms 10 Jun 2022 205th inverseLorentz 🇦🇺 851 74 20ms 13 Jun 2022 205th yzhs 🇩🇪 851 74 19ms 16 Jun 2022 205th clementblaudeau 851 74 25ms 29 Jun 2022 205th adoxography 851 74 20ms 13 Jul 2022 205th Attero 🇸🇪 851 74 20ms 20 Jul 2022 205th Heathcorp 🇦🇺 851 74 19ms 27 Jul 2022 205th jfallon1997 851 74 20ms 11 Aug 2022 205th VictorFordham 851 74 24ms 26 Aug 2022 205th georgehulme 851 74 19ms 1 Sep 2022 205th smartiel 851 74 21ms 15 Sep 2022 205th trist224 🇫🇷 851 74 20ms 21 Sep 2022 205th Kloppermand 🇩🇰 851 74 19ms 7 Oct 2022 205th knutae 🇳🇴 851 74 19ms 9 Oct 2022 205th Troon 851 74 18ms 14 Oct 2022 205th MaxElf999 851 74 20ms 14 Oct 2022 205th jakobkordez 🇸🇮 851 74 20ms 19 Oct 2022 205th Fishron 851 74 19ms 29 Nov 2022 205th SniperSmiley 🇺🇸 851 74 20ms 6 Dec 2022 205th elephantpanda 851 74 21ms 10 Dec 2022 205th ArthurBond 851 74 19ms 19 Dec 2022 205th ItsMeNoobieboy 851 74 20ms 20 Dec 2022 205th Larspolo 851 74 20ms 25 Dec 2022 205th dcc5480 851 74 19ms 12 Jan 2023 205th Ripick 851 74 20ms 1 Feb 2023 205th m3nt0ras 🇬🇷 851 74 19ms 3 Feb 2023 205th Skwerl23 851 74 19ms 5 Feb 2023 205th frankgraziano 851 74 18ms 19 Feb 2023 First Prev 161–240 of 837 Next Last
thehylian
fynnkroeger
shellbertt
🇨🇦
hunt-g
ljweel
jmerle
🇳🇱
TaserTheFox
🇺🇸
pinguicula
TheoKeller1
fkantelberg
Mikey-Beep
🇬🇧
eiburns
htareque
wearsunscreen
Grrisly
m42km
GeneralPoxter
logvp
JoaoFelipe3
ehulinsky
🇺🇸
Lewenhaupt
Yewzir
🇧🇪
stertooy
🇧🇪
cuboids
jipsong
🇩🇪
mattyhempstead
wh3n3v3r
🇨🇿
klixel
🇨🇦
tjwrenn
nullie
maxgodfrey2004
🇨🇦
lolgeny
andrewjc2000
Bulmenisaurus
souta-1326
BenjaminHGong
FEZfan
🇦🇺
wuduculfre
BREMAUCY
🇫🇷
FortuiteMan
🇫🇷
miaoaixuan
Lv0Sys
🇵🇱
zacharysfrazee
bpharaldsson
TobyBoyne
🇬🇧
RDShah
Indivicivet
CedricGebistorf
ophact
ImpressedByRocks
LHuitre
neihousaigaai
rowboat1
inverseLorentz
🇦🇺
yzhs
🇩🇪
clementblaudeau
adoxography
Attero
🇸🇪
Heathcorp
🇦🇺
jfallon1997
VictorFordham
georgehulme
smartiel
trist224
🇫🇷
Kloppermand
🇩🇰
knutae
🇳🇴
Troon
MaxElf999
jakobkordez
🇸🇮
Fishron
SniperSmiley
🇺🇸
elephantpanda
ArthurBond
ItsMeNoobieboy
Larspolo
dcc5480
Ripick
m3nt0ras
🇬🇷
Skwerl23
frankgraziano