The Calendar hole will go live in approximately 8 days. Why not try and solve it ahead of time?
Prime Numbers in Java 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 80th riviere-lucas 493 134 407ms 30 Dec 2020 80th louisbosqui 493 134 391ms 31 Dec 2020 80th selketdaly 493 134 389ms 30 Jan 2021 80th Bombergames 493 134 388ms 20 Jan 2022 80th msbranicky 493 134 408ms 9 Jan 2024 80th schaene 493 134 396ms 7 Mar 2024 80th deancureton 493 134 403ms 24 Mar 2024 80th elgan65536 493 134 399ms 6 Apr 2024 89th AIn0n 489 135 395ms 30 Aug 2021 89th rollershutter 489 135 403ms 25 Jan 2024 89th 0dyse 489 135 352ms 23 Apr 2025 89th Benzas01 489 135 373ms 5 Oct 2025 93rd blasio99 485 136 425ms 17 Jun 2021 93rd Florian-Mt 485 136 473ms 14 Jul 2024 95th xnacly 🇩🇪 482 137 374ms 3 Jul 2023 96th mattwho76 478 138 391ms 24 Apr 2020 96th hyvyys 478 138 405ms 21 Sep 2020 96th godraadam 478 138 435ms 16 Nov 2020 96th melisakmc 478 138 400ms 3 Nov 2021 96th Apataras 478 138 312ms 19 Jul 2025 101st LeftPathLane 471 140 397ms 31 Oct 2022 102nd daetz 468 141 411ms 8 Aug 2020 102nd WilleyOhana 468 141 381ms 7 Oct 2020 102nd fullerlee 468 141 427ms 30 Nov 2020 102nd KatieLG-Transpiler 🇬🇧 468 141 392ms 23 Jun 2022 102nd atazzam 🇺🇸 468 141 393ms 23 Jan 2025 102nd Pyro569 468 141 368ms 7 May 2025 108th sfuhrm 465 142 400ms 17 Dec 2021 108th aneurin-h 465 142 407ms 24 Oct 2022 108th MaxElf999 465 142 399ms 5 Feb 2023 108th rifatx 465 142 472ms 16 Jul 2024 108th DihydrogenMonoxideH2O 465 142 359ms 11 Feb 2025 113th Maximizer02 462 143 371ms 11 Sep 2024 113th luca1339 462 143 362ms 22 Nov 2024 115th jonahwdean 458 144 440ms 28 May 2024 116th DeaneKane 455 145 419ms 22 Apr 2020 116th WillowBee7 455 145 408ms 14 Oct 2020 116th c0d3-4-F00d 🇩🇪 455 145 438ms 25 May 2021 116th Robi1718 455 145 405ms 2 Dec 2021 116th LyonsWasTaken 455 145 399ms 6 Dec 2023 121st lukashert 452 146 427ms 7 Jun 2023 122nd eshilo-draper 449 147 413ms 4 Sep 2022 122nd Ythaenagor 449 147 401ms 5 Aug 2024 124th melikebuyruk 446 148 416ms 22 Mar 2021 125th aDwarfNamedUrist 440 150 405ms 27 Nov 2022 126th mathislife22 437 151 400ms 29 Aug 2024 127th willpiam 434 152 375ms 20 Oct 2023 128th KevXtroy 429 154 389ms 18 Aug 2020 129th EthanGrant1 426 155 421ms 13 Apr 2022 130th 77Tigers 423 156 382ms 10 Mar 2021 130th ToxicP1e 423 156 403ms 8 Nov 2022 132nd mokymok 🇺🇸 420 157 397ms 9 Nov 2021 132nd Intevel 🇩🇪 420 157 412ms 3 Jul 2023 134th PanNessMain 418 158 339ms 9 Mar 2025 135th ehulinsky 🇺🇸 415 159 394ms 14 Sep 2021 135th kjrookus 415 159 422ms 13 Apr 2022 137th lexigeib 413 160 409ms 17 Jul 2020 138th Bejofo 410 161 444ms 21 Jul 2021 139th Grrine 402 164 367ms 28 Jan 2025 140th acotis 400 165 360ms 6 Feb 2025 141st valgardg 🇮🇸 395 167 405ms 18 Aug 2021 141st retrohun 395 167 382ms 28 Dec 2022 141st Mabeloid 🇳🇴 395 167 370ms 4 Oct 2024 144th ferociouswonderfulgrasseater 393 168 399ms 13 Mar 2023 145th Geird 386 171 411ms 20 Feb 2023 145th jonah1068 386 171 430ms 15 Sep 2023 145th Calculations03 386 171 366ms 28 Jan 2025 148th ze-h 🇺🇸 382 173 386ms 4 Dec 2022 149th miabea73 377 175 541ms 1 Nov 2025 150th Lou1013 369 179 376ms 7 Jun 2024 151st crizin 🇰🇷 367 180 472ms 9 Sep 2023 152nd reki2069 357 185 468ms 5 Oct 2021 153rd kanjurer 355 186 403ms 26 Sep 2022 154th mjdargen 327 202 401ms 3 May 2023 155th nathan-maclinovsky 324 204 401ms 16 Sep 2022 156th yuchuehw 322 205 445ms 2 Jan 2024 157th iamdavidfrancis 317 208 398ms 10 May 2020 158th MiranDaniel 🇨🇿 293 225 467ms 31 Oct 2023 159th kevinnaviapaiva 288 229 366ms 6 Mar 2025 160th captainsauerland 277 238 641ms 4 Jan 2023 First Prev 81–160 of 170 Next Last
