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 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 Apéry’s Constant Binary Lambda Calculus 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 Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula 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 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 Apéry’s Constant Binary Lambda Calculus 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 Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 956th pfysches-boop 850 63 10ms 6 Aug 2023 956th mhgockel 850 63 10ms 19 Aug 2023 956th NickTheEASDude 🇺🇸 850 63 11ms 18 Jan 2024 956th 823126 850 63 13ms 14 Nov 2024 956th Palladium02 850 63 10ms 12 May 2025 956th 4very 850 63 12ms 10 Jun 2025 956th Ultra814 850 63 11ms 21 Aug 2025 968th inventshah 850 74 2ms 4 May 2022 968th undersquire 850 74 2ms 24 Jun 2023 968th rdmsr 850 74 2ms 24 Jun 2023 968th Bmrl7 850 74 2ms 9 Jul 2023 968th Vinterion 850 74 2ms 6 Nov 2023 968th Herbert00709 🇵🇱 850 74 2ms 22 Dec 2023 974th krcs 🇵🇱 849 53 280ms 9 May 2022 974th ryanlanegit 849 53 312ms 19 Jun 2022 974th sisyphus-ppcg 🇦🇺 849 53 453ms 15 Aug 2022 977th MeWhenI 🇻🇦 849 71 106ms 13 Dec 2022 978th Shanethegamer 🇺🇸 849 98 121ms 26 Oct 2022 978th emgordon154 849 98 121ms 18 Feb 2025 980th jared-hughes 849 100 75ms 20 Jul 2022 980th ZakkkkAttackkkk 🇵🇭 849 100 61ms 10 Aug 2022 980th Walter225 849 100 65ms 25 Jul 2023 983rd DialFrost 🇸🇬 848 66 93ms 7 Apr 2025 983rd KasperKivimaeki 🇫🇮 848 66 6ms 22 Dec 2025 985th SirBogman 🇺🇸 848 89 38ms 4 May 2022 986th MeWhenI 🇻🇦 848 164 1,639ms 7 Nov 2025 987th Shanethegamer 🇺🇸 847 58 1,035ms 17 Sep 2025 988th AdamHe17 847 73 21ms 31 May 2022 988th AliceFord 847 73 21ms 2 Jun 2022 988th Natanaelel 🇸🇪 847 73 16ms 16 Jun 2022 988th btjones0 847 73 24ms 21 Jun 2022 988th marcin7Cd 847 73 21ms 27 Jun 2022 988th tri1212 🇻🇳 847 73 21ms 18 Jul 2022 988th vhoulbreque 🇫🇷 847 73 20ms 18 Aug 2022 988th KatieLG 🇬🇧 847 73 20ms 29 Aug 2022 988th tkr-sh 🇰🇵 847 73 20ms 8 Sep 2022 988th jroscoe5 847 73 20ms 15 Sep 2022 988th fredrik-bakke 🇳🇴 847 73 19ms 18 Sep 2022 988th OhmNomNom 847 73 23ms 7 Oct 2022 988th 0-4849 847 73 21ms 1 Nov 2022 988th M0PKOBKA 847 73 25ms 19 Dec 2022 988th calumacutt 847 73 24ms 19 Dec 2022 988th thehylian 847 73 20ms 2 Jan 2023 988th fynnkroeger 847 73 22ms 6 Jan 2023 988th shellbertt 🇨🇦 847 73 20ms 13 Jan 2023 988th hunt-g 847 73 21ms 4 Feb 2023 988th ljweel 847 73 21ms 13 Feb 2023 988th jmerle 🇳🇱 847 73 20ms 16 Feb 2023 988th TaserTheFox 🇺🇸 847 73 20ms 14 Mar 2023 988th pinguicula 847 73 21ms 6 Apr 2023 988th TheoKeller1 847 73 24ms 11 Jun 2023 988th fkantelberg 847 73 19ms 16 Jul 2023 988th Mikey-Beep 🇬🇧 847 73 21ms 31 Aug 2023 988th eiburns 847 73 22ms 9 Oct 2023 988th htareque 847 73 21ms 13 Oct 2023 988th wearsunscreen 847 73 22ms 18 Oct 2023 988th Grrisly 847 73 20ms 10 Nov 2023 988th m42km 847 73 20ms 11 Nov 2023 988th GeneralPoxter 847 73 20ms 7 Dec 2023 988th logvp 847 73 24ms 12 Jan 2024 988th JoaoFelipe3 847 73 22ms 13 Jan 2024 988th ehulinsky 🇺🇸 847 73 21ms 16 Feb 2024 988th Lewenhaupt 847 73 19ms 23 Feb 2024 988th Yewzir 🇧🇪 847 73 18ms 5 Apr 2024 988th stertooy 🇧🇪 847 73 20ms 9 Jun 2024 988th cuboids 847 73 20ms 11 Jul 2024 988th jipsong 🇩🇪 847 73 20ms 23 Jul 2024 988th mattyhempstead 847 73 21ms 6 Oct 2024 988th wh3n3v3r 🇨🇿 847 73 20ms 18 Nov 2024 988th klixel 🇨🇦 847 73 20ms 18 Nov 2024 988th tjwrenn 847 73 20ms 10 Dec 2024 988th nullie 847 73 20ms 19 Dec 2024 988th maxgodfrey2004 🇨🇦 847 73 21ms 13 Feb 2025 988th lolgeny 847 73 19ms 22 Feb 2025 988th andrewjc2000 847 73 21ms 23 Feb 2025 988th Bulmenisaurus 847 73 23ms 2 Mar 2025 988th souta-1326 847 73 21ms 1 Apr 2025 988th BenjaminHGong 847 73 21ms 26 May 2025 988th FEZfan 🇦🇺 847 73 20ms 11 Jul 2025 988th wuduculfre 847 73 21ms 28 Jul 2025 First Prev 961–1,040 of 3,598 Next Last
pfysches-boop
mhgockel
NickTheEASDude
🇺🇸
823126
Palladium02
4very
Ultra814
inventshah
undersquire
rdmsr
Bmrl7
Vinterion
Herbert00709
🇵🇱
krcs
🇵🇱
ryanlanegit
sisyphus-ppcg
🇦🇺
MeWhenI
🇻🇦
Shanethegamer
🇺🇸
emgordon154
jared-hughes
ZakkkkAttackkkk
🇵🇭
Walter225
DialFrost
🇸🇬
KasperKivimaeki
🇫🇮
SirBogman
🇺🇸
AdamHe17
AliceFord
Natanaelel
🇸🇪
btjones0
marcin7Cd
tri1212
🇻🇳
vhoulbreque
🇫🇷
KatieLG
🇬🇧
tkr-sh
🇰🇵
jroscoe5
fredrik-bakke
🇳🇴
OhmNomNom
0-4849
M0PKOBKA
calumacutt
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