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 637th PATTRIM 700 90 17ms 5 Jan 2023 637th charliegaming 700 90 19ms 3 Oct 2023 637th lhulinsky 700 90 20ms 22 Oct 2024 637th bthalheim 700 90 21ms 6 Dec 2024 637th nooby31415 700 90 19ms 18 Apr 2025 637th SinArieh 700 90 25ms 4 May 2025 637th islptng 700 90 23ms 7 Jul 2025 637th Mr-McChicken 700 90 17ms 4 Oct 2025 637th NoneTheFewer 700 90 18ms 4 Dec 2025 650th AbelPelser 692 91 22ms 3 Jul 2022 650th Seis 692 91 19ms 9 Dec 2022 650th r-i-c-e 692 91 20ms 9 Jul 2023 650th joshcors 692 91 17ms 30 Jun 2024 650th resoNathan 692 91 16ms 9 Jul 2024 650th jameswmccarty 692 91 20ms 24 Sep 2024 650th hamilton-bonds 692 91 17ms 12 Nov 2024 650th Wonamm 692 91 29ms 14 Feb 2025 658th TimLeffke 685 92 22ms 17 Aug 2022 658th Rythoka 685 92 15ms 17 Oct 2022 658th UriyaBA 685 92 17ms 19 Mar 2023 658th VladislavGitter 🇪🇸 685 92 19ms 14 Nov 2023 658th ridingqwerty 🇺🇸 685 92 16ms 22 Dec 2023 658th Thonoton 685 92 19ms 1 Feb 2024 658th OCNeve 685 92 20ms 17 Jun 2024 658th themoonisacheese 685 92 24ms 25 Feb 2025 658th BabySharkHi 685 92 23ms 22 Apr 2025 658th arjunarya1 685 92 16ms 28 Aug 2025 658th TJK-S 685 92 19ms 10 Oct 2025 669th Bananapants22 677 93 26ms 4 Sep 2022 669th jaxmattfair 🇺🇸 677 93 19ms 10 Jan 2023 669th cingulataluke 677 93 20ms 27 Aug 2023 669th fenix-bear 677 93 20ms 18 Nov 2023 669th epic-programmer-guy 677 93 22ms 22 Dec 2023 669th brimstonetrader 677 93 24ms 18 Nov 2024 669th HunterC14 677 93 26ms 10 Feb 2026 676th atazzam 🇺🇸 670 94 17ms 18 May 2022 676th rohangpta 670 94 17ms 8 Aug 2022 676th shinylego 670 94 19ms 14 Sep 2022 676th sgaltair 670 94 20ms 4 Nov 2022 676th TotoAJ 670 94 20ms 15 Dec 2023 676th Gusic06 670 94 19ms 6 May 2024 676th kyleyarwood 670 94 21ms 6 Oct 2024 676th jj0786-cell 670 94 20ms 1 Apr 2025 676th griffinschreiber 670 94 20ms 1 Apr 2025 676th o800 670 94 20ms 17 Nov 2025 686th felixcroc 663 95 19ms 30 Mar 2023 686th Pyro569 663 95 18ms 4 Jul 2023 686th rm-rf-innocence 663 95 20ms 19 Dec 2023 686th Bit125 663 95 19ms 30 Jan 2024 686th aalec 663 95 21ms 25 Apr 2024 686th strogor 663 95 20ms 13 Jun 2025 686th cthierfelder 🇲🇨 663 95 20ms 17 Jul 2025 686th ThomasDelepine 663 95 21ms 29 Oct 2025 694th karhuthebear 656 96 24ms 9 May 2022 694th qwjhvbxi 656 96 21ms 6 Feb 2024 694th alfonsoalves 656 96 20ms 21 Jul 2024 694th jeff-re 656 96 14ms 1 Apr 2025 698th a-penton 649 97 17ms 22 Sep 2022 698th jrbud 649 97 19ms 6 Jan 2024 698th befoster 649 97 22ms 22 Feb 2024 698th joshua-el-samalouti 🇩🇪 649 97 19ms 26 May 2024 698th luca1339 649 97 20ms 10 Jun 2024 703rd lukemalek 643 98 14ms 10 Oct 2022 703rd UltimateGuy0987 643 98 20ms 14 Oct 2022 703rd TheLazySquid 643 98 21ms 20 Dec 2022 703rd StronkCheese 🇺🇸 643 98 20ms 13 Mar 2023 703rd Anthony-Williams-06 643 98 27ms 17 Oct 2023 703rd abcdhhhh 643 98 15ms 27 Aug 2024 703rd OSYCh314 🇦🇺 643 98 26ms 16 Nov 2024 703rd cole-wilson 643 98 19ms 9 Dec 2024 703rd Akilles1 643 98 20ms 15 May 2025 703rd Hyperoplex145 643 98 21ms 11 Nov 2025 713th LukeRichardson-dev 636 99 15ms 12 May 2022 713th Tagfox 636 99 20ms 18 Jul 2022 713th gabrielsqw 636 99 23ms 24 Oct 2023 713th sciencedjinn 636 99 19ms 8 Nov 2024 713th MrNiknoc 636 99 18ms 15 Jun 2025 718th OppositeShark 630 100 18ms 19 Jul 2022 718th NOS4A5I 630 100 18ms 10 Jan 2023 718th lomarbrick 630 100 18ms 16 May 2023 First Prev 641–720 of 840 Next Last
PATTRIM
charliegaming
lhulinsky
bthalheim
nooby31415
SinArieh
islptng
Mr-McChicken
NoneTheFewer
AbelPelser
Seis
r-i-c-e
joshcors
resoNathan
jameswmccarty
hamilton-bonds
Wonamm
TimLeffke
Rythoka
UriyaBA
VladislavGitter
🇪🇸
ridingqwerty
🇺🇸
Thonoton
OCNeve
themoonisacheese
BabySharkHi
arjunarya1
TJK-S
Bananapants22
jaxmattfair
🇺🇸
cingulataluke
fenix-bear
epic-programmer-guy
brimstonetrader
HunterC14
atazzam
🇺🇸
rohangpta
shinylego
sgaltair
TotoAJ
Gusic06
kyleyarwood
jj0786-cell
griffinschreiber
o800
felixcroc
Pyro569
rm-rf-innocence
Bit125
aalec
strogor
cthierfelder
🇲🇨
ThomasDelepine
karhuthebear
qwjhvbxi
alfonsoalves
jeff-re
a-penton
jrbud
befoster
joshua-el-samalouti
🇩🇪
luca1339
lukemalek
UltimateGuy0987
TheLazySquid
StronkCheese
🇺🇸
Anthony-Williams-06
abcdhhhh
OSYCh314
🇦🇺
cole-wilson
Akilles1
Hyperoplex145
LukeRichardson-dev
Tagfox
gabrielsqw
sciencedjinn
MrNiknoc
OppositeShark
NOS4A5I
lomarbrick