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 NFA Simulator 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 NFA Simulator 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 1st JayXon 🇺🇸 1,000 66 350ms 24 Sep 2025 1st sean-niemann 🇺🇸 1,000 66 357ms 24 Sep 2025 1st namelessiw 1,000 66 339ms 4 Oct 2025 1st MeWhenI 🇻🇦 1,000 66 347ms 25 days ago 5th nwellnhof 🇩🇪 943 70 333ms 25 Sep 2025 5th DialFrost 🇸🇬 943 70 327ms 19 days ago 5th KasperKivimaeki 🇫🇮 943 70 320ms 27 hours ago 8th edsrzf 🇳🇿 930 71 357ms 24 Sep 2025 8th b-illy 🇬🇧 930 71 336ms 24 Sep 2025 8th voytxt 🇨🇿 930 71 344ms 25 Sep 2025 8th stefangimmillaro 930 71 344ms 6 Oct 2025 8th h3ra993huskp 🇯🇵 930 71 354ms 3 days ago 8th ScottHamper 930 71 344ms 2 days ago 14th Shanethegamer 🇺🇸 868 76 338ms 25 Sep 2025 14th Yewzir 🇧🇪 868 76 350ms 2 Oct 2025 14th kmathis22 868 76 346ms 24 Oct 2025 14th Jacob385 868 76 335ms 27 Oct 2025 18th WildTooth 835 79 337ms 9 Oct 2025 19th dokutan 795 83 338ms 24 Sep 2025 20th Liibe 776 85 323ms 25 Sep 2025 21st ethanlally 750 88 334ms 27 days ago 22nd CaedenHarper 🇨🇦 725 91 325ms 24 Sep 2025 23rd Schmitt-Very-Cool 717 92 327ms 3 Oct 2025 24th snoozingnewt 🇺🇸 710 93 332ms 28 Sep 2025 24th squid233 710 93 343ms 25 days ago 24th HumanoidCPU 710 93 339ms 25 days ago 27th primo-ppcg 🇹🇭 641 103 322ms 24 Apr 2020 27th prplz 🇦🇺 641 103 312ms 18 Nov 2020 27th Lydxn 🇨🇦 641 103 318ms 12 Jul 2021 27th Steffan153 🇫🇮 641 103 314ms 9 Aug 2024 31st Attero 🇸🇪 611 108 294ms 28 Apr 2020 31st KatieLG 🇬🇧 611 108 307ms 22 Oct 2021 31st Widgitty 611 108 286ms 18 Jul 2023 34th Looney32768 600 110 296ms 27 Jan 2023 35th BBoehm 🇩🇪 595 111 292ms 29 Oct 2020 35th helbling 🇨🇭 595 111 295ms 11 Mar 2024 37th janbehrens 🇩🇪 584 113 298ms 3 Sep 2020 37th KrausRaus 🇺🇸 584 113 305ms 22 Mar 2021 37th neihousaigaai 584 113 301ms 6 Apr 2021 37th inventshah 584 113 298ms 20 Apr 2021 37th Irratix 🇳🇱 584 113 295ms 7 Dec 2021 37th Betuaredead 584 113 300ms 14 Nov 2023 37th SirBogman 🇺🇸 584 113 299ms 3 Jan 2024 37th yoshykai 584 113 301ms 30 Mar 2025 37th eMGeeneer 584 113 299ms 20 Sep 2025 46th madeforlosers 579 114 291ms 5 Jan 2024 46th sultan 579 114 289ms 27 Mar 2024 48th cbrt-x 564 117 295ms 29 Aug 2021 48th Leftykap 564 117 300ms 14 Sep 2022 48th FlorianCassayre 🇫🇷 564 117 294ms 28 Sep 2022 48th piano-miles 564 117 297ms 7 Feb 2023 52nd Rhinozz 🇨🇦 559 118 307ms 12 Aug 2021 53rd lukehewittvandy 555 119 298ms 19 Jul 2022 54th shellbertt 🇨🇦 550 120 305ms 26 Dec 2021 55th jjstreet 545 121 295ms 30 Apr 2020 56th Antonio-Vel 541 122 293ms 20 Aug 2022 56th mathb0y512 541 122 295ms 14 Nov 2022 58th konst-aa 537 123 300ms 11 Aug 2022 59th bwat2 532 124 302ms 21 Apr 2022 59th CarsonChr 🇺🇸 532 124 299ms 26 Jul 2024 61st coltraloz 🇪🇸 528 125 295ms 6 Mar 2025 62nd ricehens 524 126 309ms 26 Nov 2021 62nd Carloz69 524 126 298ms 3 Dec 2021 64th bac0id 520 127 293ms 26 Sep 2023 65th Re-Adventures 🇮🇳 516 128 299ms 17 Mar 2021 66th richard-oelze 🇩🇪 512 129 308ms 1 May 2021 67th tomh1012 508 130 299ms 9 Oct 2020 67th Luca2812 508 130 304ms 30 Dec 2021 67th lorenzosim 508 130 302ms 5 Aug 2022 67th cnelson20 508 130 297ms 8 Aug 2022 67th GWStuart 508 130 286ms 1 Jul 2024 72nd tkr-sh 🇰🇵 504 131 300ms 4 May 2022 72nd lordsnek 504 131 304ms 26 Jan 2024 74th caynraiser 500 132 302ms 8 Dec 2021 75th Kusarr 496 133 301ms 17 Dec 2020 1–75 of 169 Next Last
