Prime Numbers in C# 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 Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript 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 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 ArkScript 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 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 Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 79th Adix-null 🇱🇹 624 85 395ms 10 Nov 2025 82nd ericlangedijk 🇸🇮 616 86 378ms 16 Mar 2022 82nd Betuaredead 616 86 368ms 4 Jan 2023 82nd HumanoidCPU 616 86 379ms 1 Apr 2024 82nd Soyo-Wind 616 86 388ms 25 Jan 2026 86th pallbo 609 87 363ms 21 Nov 2021 86th Florian-Mt 609 87 373ms 14 Jul 2024 86th rifatx 609 87 380ms 19 Jul 2024 86th alicethecatwhisperermeow 609 87 443ms 6 Aug 2024 86th Natanaelel 🇸🇪 609 87 357ms 10 Apr 2025 86th snoozingnewt 🇨🇦 609 87 371ms 28 Sep 2025 86th bilal2709 609 87 387ms 23 Jan 2026 93rd pikti 602 88 363ms 21 Nov 2021 93rd p-vf 🇨🇭 602 88 378ms 16 Jul 2022 93rd astdefu 602 88 386ms 13 Dec 2022 93rd ertz1ertz 602 88 400ms 9 Aug 2024 97th zer0bits42 596 89 376ms 14 Nov 2022 98th jmhowl 589 90 360ms 21 Nov 2021 98th TheKPAXian 589 90 368ms 21 Nov 2021 98th RandGuy 589 90 380ms 8 Dec 2021 98th jusaka 589 90 436ms 3 hours ago 102nd msbranicky 582 91 355ms 22 Aug 2023 103rd petroselo 576 92 400ms 21 Nov 2021 104th yannikHoeflich 570 93 352ms 21 Nov 2021 104th rollershutter 570 93 362ms 7 Apr 2022 104th aDwarfNamedUrist 570 93 373ms 11 Sep 2024 107th muztanger 564 94 359ms 21 Nov 2021 107th MaxElf999 564 94 381ms 3 Oct 2022 107th Pyro569 564 94 378ms 20 Jul 2023 110th eshilo-draper 546 97 363ms 3 Sep 2022 110th Alex-Huggett 🇬🇧 546 97 357ms 14 Apr 2024 110th Ythaenagor 546 97 357ms 5 Aug 2024 113th SpareManiKatti 541 98 378ms 21 Nov 2021 113th wescombs10 541 98 360ms 29 Oct 2022 115th Mikey-Beep 🇬🇧 535 99 400ms 2 Sep 2024 115th hippopotam00sehead 🇨🇦 535 99 375ms 11 Sep 2024 117th MadScience137 530 100 388ms 12 Oct 2022 118th adotagarwal 525 101 398ms 4 Mar 2023 119th iamdavidfrancis 510 104 377ms 21 Nov 2021 119th TimJackMaster 510 104 396ms 16 Feb 2023 119th nakatchi 510 104 386ms 17 Mar 2024 122nd taylorbrown2686 505 105 350ms 8 Mar 2022 123rd mduckles 500 106 354ms 19 Nov 2022 123rd johannes-looney-lizard 500 106 369ms 29 Apr 2025 125th Dexaan 495 107 357ms 21 Nov 2021 126th Jennifervl 🇸🇪 482 110 357ms 11 Dec 2021 127th resoNathan 477 111 360ms 25 Apr 2024 128th mokymok 🇺🇸 473 112 358ms 21 Nov 2021 128th retrohun 473 112 354ms 28 Dec 2022 128th Mabeloid 🇳🇴 473 112 346ms 4 Oct 2024 128th Andrey2001 473 112 362ms 29 Jan 2026 132nd Cbrt74088 457 116 380ms 21 Nov 2021 132nd tbschff 457 116 380ms 16 Apr 2022 132nd KatieLG-Transpiler 🇬🇧 457 116 372ms 23 Jun 2022 132nd zt14427 457 116 366ms 30 Aug 2023 132nd acotis 457 116 364ms 19 Feb 2025 137th aplato 449 118 373ms 21 Nov 2021 138th BradSissons 🇳🇿 438 121 392ms 21 Nov 2021 139th Mortistar 431 123 377ms 18 Jul 2023 140th hklemp 🇩🇪 427 124 381ms 21 Nov 2021 141st ze-h 🇺🇸 421 126 376ms 24 Aug 2022 141st charliegaming 421 126 380ms 3 Oct 2023 143rd BeansMage42 408 130 374ms 29 Dec 2024 144th MarkStockwellZA 402 132 394ms 4 Jan 2022 145th artisiole 🇺🇸 371 143 380ms 3 Mar 2022 146th codewrite 🇬🇧 356 149 414ms 3 Jan 2026 147th kevinnaviapaiva 342 155 387ms 25 Feb 2025 148th ryguyNelson 321 165 379ms 21 Nov 2021 149th willpiam 315 168 405ms 20 Oct 2023 150th BharadwajSridharan 🇮🇳 114 465 406ms 21 Nov 2021 First Prev 81–150 of 150