The Calendar hole will go live in approximately 2 days. Why not try and solve it ahead of time?
Kaprekar Numbers in all languages in chars. 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 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 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 Multitap Input 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 ><> 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 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 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 Multitap Input 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 Chars Time Submitted 718th MeWhenI 🇻🇦 171 441 37ms 2 Nov 2024 718th CaedenHarper 🇨🇦 171 441 38ms 25 Jan 2025 723rd ocefra 170 393 104ms 25 Dec 2024 724th Shanethegamer 🇺🇸 170 471 455ms 1 Nov 2024 725th MeWhenI 🇻🇦 170 472 435ms 2 Nov 2024 725th CaedenHarper 🇨🇦 170 472 450ms 24 Jan 2025 727th KatieLG 🇬🇧 170 483 164ms 30 Nov 2025 728th HumanoidCPU 169 473 435ms 1 Nov 2024 729th HumanoidCPU 167 455 2ms 1 Nov 2024 729th KatieLG 🇬🇧 167 455 2ms 1 Nov 2024 729th Shanethegamer 🇺🇸 167 455 2ms 1 Nov 2024 729th MeWhenI 🇻🇦 167 455 2ms 2 Nov 2024 729th CaedenHarper 🇨🇦 167 455 2ms 16 Aug 2025 734th KatieLG 🇬🇧 167 472 42ms 1 Nov 2024 735th HumanoidCPU 166 458 355ms 1 Nov 2024 735th Shanethegamer 🇺🇸 166 458 349ms 1 Nov 2024 735th KatieLG 🇬🇧 166 458 341ms 1 Nov 2024 735th dokutan 166 458 347ms 1 Nov 2024 739th KatieLG 🇬🇧 166 487 430ms 24 Sep 2025 740th HumanoidCPU 165 441 3ms 1 Nov 2024 740th KatieLG 🇬🇧 165 441 3ms 1 Nov 2024 740th Shanethegamer 🇺🇸 165 441 3ms 1 Nov 2024 740th MeWhenI 🇻🇦 165 441 3ms 2 Nov 2024 740th CaedenHarper 🇨🇦 165 441 3ms 31 Jan 2025 745th KatieLG 🇬🇧 165 445 2,943ms 1 Nov 2024 745th MeWhenI 🇻🇦 165 445 3,014ms 2 Nov 2024 745th CaedenHarper 🇨🇦 165 445 2,780ms 1 Feb 2025 748th HumanoidCPU 162 452 3,151ms 1 Nov 2024 748th Shanethegamer 🇺🇸 162 452 2,970ms 1 Nov 2024 748th Chinay-Domitrix 🇺🇸 162 452 2,644ms 9 Apr 2025 751st HumanoidCPU 158 657 30ms 4 Nov 2025 752nd CaedenHarper 🇨🇦 158 659 26ms 16 Aug 2025 753rd adamnielson42 🇺🇸 157 395 4,303ms 3 Dec 2024 754th KatieLG 🇬🇧 157 661 29ms 1 Nov 2024 755th Kokusui 🇯🇵 154 434 4ms 19 Nov 2024 756th snoozingnewt 🇨🇦 154 476 3,559ms 27 Sep 2025 757th MeWhenI 🇻🇦 154 509 37ms 2 Nov 2024 757th CaedenHarper 🇨🇦 154 509 37ms 22 Jan 2025 759th KatieLG 🇬🇧 154 510 36ms 1 Nov 2024 760th HumanoidCPU 153 454 67ms 1 Nov 2024 760th dokutan 153 454 66ms 1 Nov 2024 760th CaedenHarper 🇨🇦 153 454 64ms 16 Aug 2025 763rd Shanethegamer 🇺🇸 151 443 6ms 8 May 2025 764th HumanoidCPU 151 448 102ms 1 Nov 2024 764th Shanethegamer 🇺🇸 151 448 104ms 1 Nov 2024 764th MeWhenI 🇻🇦 151 448 95ms 2 Nov 2024 764th CaedenHarper 🇨🇦 151 448 99ms 16 Aug 2025 768th Shanethegamer 🇺🇸 151 450 606ms 16 Apr 2025 768th KatieLG 🇬🇧 151 450 579ms 20 Apr 2025 768th MeWhenI 🇻🇦 151 450 601ms 15 Sep 2025 771st HumanoidCPU 150 445 5ms 1 Nov 2024 771st MeWhenI 🇻🇦 150 445 4ms 2 Nov 2024 771st fischfood 150 445 4ms 8 Nov 2024 771st CaedenHarper 🇨🇦 150 445 7ms 16 Aug 2025 775th HumanoidCPU 150 448 1ms 1 Nov 2024 775th Shanethegamer 🇺🇸 150 448 2ms 1 Nov 2024 775th koipondx86 150 448 2ms 1 Nov 2024 775th MeWhenI 🇻🇦 150 448 1ms 2 Nov 2024 775th CaedenHarper 🇨🇦 150 448 2ms 16 Aug 2025 780th Unknownuserfrommars 150 557 3,002ms 10 Dec 2024 781st KatieLG 🇬🇧 149 538 465ms 1 Nov 2024 782nd KatieLG 🇬🇧 149 563 980ms 1 Nov 2024 783rd HumanoidCPU 148 456 1ms 1 Nov 2024 783rd Shanethegamer 🇺🇸 148 456 2ms 1 Nov 2024 783rd CaedenHarper 🇨🇦 148 456 1ms 23 Jan 2025 783rd Maashau 148 456 2ms 17 days ago 787th Maznek 146 364 9ms 8 Nov 2024 787th elisherer 🇮🇱 146 364 9ms 3 Nov 2025 789th HumanoidCPU 146 461 100ms 1 Nov 2024 789th KatieLG 🇬🇧 146 461 102ms 1 Nov 2024 789th Shanethegamer 🇺🇸 146 461 98ms 1 Nov 2024 789th MeWhenI 🇻🇦 146 461 97ms 2 Nov 2024 789th CaedenHarper 🇨🇦 146 461 104ms 24 Jan 2025 794th KatieLG 🇬🇧 146 466 90ms 30 Nov 2025 795th dokutan 143 349 119ms 2 days ago 796th KatieLG 🇬🇧 142 469 5ms 30 Nov 2025 797th HumanoidCPU 141 446 72ms 1 Nov 2024 797th Shanethegamer 🇺🇸 141 446 73ms 1 Nov 2024 797th MeWhenI 🇻🇦 141 446 79ms 2 Nov 2024 797th CaedenHarper 🇨🇦 141 446 71ms 16 Aug 2025 First Prev 721–800 of 984 Next Last