The Tower of Hanoi hole will go live in approximately 2 days. Why not try and solve it ahead of time?
Emirp Numbers 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 449th sisyphus-ppcg 🇦🇺 881 177 10ms 30 May 2021 449th SirBogman 🇺🇸 881 177 10ms 28 Nov 2021 449th scpchicken 🇵🇼 881 177 10ms 22 Dec 2021 449th SpareManiKatti 881 177 10ms 19 Apr 2022 449th ovs-code 🇩🇪 881 177 10ms 22 Apr 2022 456th Attero 🇸🇪 880 44 107ms 24 Apr 2020 456th SirBogman 🇺🇸 880 44 110ms 29 Oct 2022 456th SirFireball3521 880 44 97ms 3 Mar 2023 459th edsrzf 🇳🇿 879 74 3ms 29 Jun 2025 460th MeWhenI 🇻🇦 879 100 438ms 5 Mar 2022 461st xorraxrax 877 76 9ms 26 Oct 2019 461st Shanethegamer 🇺🇸 877 76 10ms 10 May 2021 461st domingues 🇵🇹 877 76 9ms 10 Aug 2022 461st Alex-x90 🇺🇸 877 76 9ms 28 Jan 2023 461st Nic0M 877 76 10ms 13 Aug 2023 461st CaedenHarper 🇨🇦 877 76 10ms 19 Sep 2024 461st jatloe 877 76 10ms 29 Oct 2024 461st Emutis 🇱🇹 877 76 10ms 18 days ago 469th KatieLG-Transpiler 🇬🇧 876 178 10ms 24 Jun 2022 470th emgordon154 875 76 2,791ms 10 Apr 2025 471st bforte 875 86 131ms 26 Dec 2018 472nd primo-ppcg 🇹🇭 874 79 110ms 6 Sep 2023 473rd GrayJoKing 🇦🇺 873 78 4ms 26 Jul 2023 474th edsrzf 🇳🇿 873 108 342ms 24 Sep 2025 474th DialFrost 🇸🇬 873 108 320ms 24 Sep 2025 476th MeWhenI 🇻🇦 873 113 32ms 4 Jan 2022 476th Lydxn 🇨🇦 873 113 32ms 4 Jan 2022 478th emgordon154 873 172 1,425ms 28 Mar 2025 479th JayXon 🇺🇸 872 159 1,587ms 14 Sep 2025 480th jared-hughes 871 65 34ms 12 Sep 2022 481st lifthrasiir 🇰🇷 870 72 391ms 2 Dec 2024 481st albanian-laundromat 870 72 452ms 7 Oct 2025 483rd kkoenig 870 124 266ms 14 Sep 2024 484th stefangimmillaro 869 89 103ms 15 Jul 2023 485th marcin7Cd 869 99 6ms 6 Feb 2021 486th DialFrost 🇸🇬 868 74 6ms 17 Aug 2025 487th emgordon154 868 98 96ms 38 hours ago 487th GolfingSuccess 🇬🇷 868 98 94ms 14 hours ago 487th edsrzf 🇳🇿 868 98 94ms 13 hours ago 490th DialFrost 🇸🇬 868 173 425ms 15 Aug 2025 491st sean-niemann 🇺🇸 867 63 2ms 24 Jul 2023 492nd ovs-code 🇩🇪 866 69 220ms 12 Mar 2024 493rd nwellnhof 🇩🇪 866 111 51ms 18 Jan 2022 493rd KasperKivimaeki 🇫🇮 866 111 56ms 8 days ago 495th Natanaelel 🇸🇪 865 33 35ms 1 Mar 2025 496th jarekwg 865 77 9ms 19 Apr 2019 496th TFeld00 🇩🇰 865 77 20ms 28 Jan 2021 496th KatieLG 🇬🇧 865 77 10ms 14 Feb 2021 496th chethus 865 77 10ms 10 May 2021 496th mokymok 🇺🇸 865 77 10ms 17 Nov 2021 496th StefanHabel 🇨🇦 865 77 10ms 26 Mar 2023 496th luuumine 🇫🇷 865 77 16ms 11 days ago 503rd Shanethegamer 🇺🇸 863 55 5ms 27 Dec 2021 504th ovs-code 🇩🇪 863 83 4ms 7 Feb 2023 505th emgordon154 863 125 251ms 17 Jan 2025 506th Garklein 🇨🇦 862 29 2ms 8 Jan 2025 507th emplv 🇱🇻 862 63 128ms 30 Oct 2024 508th MeWhenI 🇻🇦 862 161 1,614ms 20 days ago 509th MeWhenI 🇻🇦 861 69 953ms 12 May 2023 510th FlyingPenguin223 861 78 2ms 27 Oct 2024 511th verticallity 861 109 123ms 7 Apr 2022 512th dan-simon 860 45 108ms 28 Dec 2017 512th evb0110 860 45 101ms 24 Jan 2018 512th labster 860 45 97ms 4 Feb 2018 512th hughsimpson 860 45 98ms 9 Jul 2018 516th commandblockguy 🇺🇸 858 73 406ms 15 Jan 2024 516th Yewzir 🇧🇪 858 73 494ms 4 Feb 2024 516th emgordon154 858 73 395ms 26 Jul 2024 519th dvargas46 🇺🇸 855 84 4,059ms 19 Nov 2022 520th scpchicken 🇵🇼 855 88 155ms 21 Feb 2023 521st RDShah 854 78 10ms 3 Aug 2020 521st Fishron 854 78 17ms 19 Oct 2021 521st Babafaba 854 78 10ms 11 days ago 524th MeWhenI 🇻🇦 854 120 1ms 20 Apr 2022 525th Lydxn 🇨🇦 853 84 6ms 5 Feb 2023 First Prev 451–525 of 3,111 Next Last