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 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 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 ArkScript 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 ArkScript 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 Calendar 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 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 1st btnlq 1,000 53 433ms 10 Mar 2023 1st JayXon 🇺🇸 1,000 53 408ms 10 Mar 2023 1st Lydxn 🇨🇦 1,000 53 429ms 19 May 2023 1st AdrienHache 🇫🇷 1,000 53 425ms 20 Jun 2023 1st stefangimmillaro 1,000 53 427ms 15 Jul 2023 1st MeWhenI 🇻🇦 1,000 53 407ms 26 Jul 2023 1st namelessiw 1,000 53 452ms 12 Dec 2023 1st sean-niemann 🇺🇸 1,000 53 426ms 23 Dec 2024 1st Yax42 🇫🇷 1,000 53 431ms 9 Feb 2025 10th ScottHamper 981 54 388ms 21 Nov 2021 10th tomtheisen 🇺🇸 981 54 387ms 21 Nov 2021 12th fuzzylojik-golf 🇺🇸 841 63 399ms 31 Jul 2025 13th nwellnhof 🇩🇪 828 64 423ms 21 Dec 2021 13th WalrusesAreAwesome 828 64 405ms 11 Jan 2025 13th prplz 🇦🇺 828 64 423ms 23 Jan 2025 13th KasperKivimaeki 🇫🇮 828 64 466ms 23 days ago 13th amazingalek 828 64 406ms 16 days ago 18th Attero 🇸🇪 815 65 377ms 21 Nov 2021 18th billings7 🇬🇧 815 65 374ms 21 Nov 2021 18th KatieLG 🇬🇧 815 65 383ms 21 Nov 2021 18th primo-ppcg 🇹🇭 815 65 391ms 21 Nov 2021 18th roavin 815 65 402ms 29 Jun 2022 18th annaproxy 815 65 417ms 19 May 2023 18th b-illy 🇬🇧 815 65 384ms 21 Jan 2025 18th albanian-laundromat 815 65 473ms 22 days ago 18th DialFrost 🇸🇬 815 65 397ms 14 days ago 27th Shanethegamer 🇺🇸 803 66 402ms 28 Dec 2021 27th Yewzir 🇧🇪 803 66 365ms 8 May 2023 27th janbehrens 🇩🇪 803 66 408ms 27 Nov 2023 27th SirBogman 🇺🇸 803 66 386ms 3 Jan 2024 31st SmartK8 🇨🇿 791 67 409ms 10 Oct 2022 32nd KrausRaus 🇺🇸 779 68 389ms 26 Jun 2023 33rd Gaddy 🇫🇷 768 69 433ms 1 Jun 2022 33rd postie77 768 69 393ms 18 Apr 2023 35th Irratix 🇳🇱 757 70 418ms 13 Dec 2021 35th Ripick 757 70 407ms 18 Jul 2022 35th CatsAreFluffy 757 70 433ms 28 Nov 2022 38th sultan 746 71 380ms 2 Apr 2024 39th tkr-sh 🇰🇵 736 72 380ms 4 May 2022 39th ChrisTheisen 736 72 398ms 19 Dec 2022 39th mathb0y512 736 72 386ms 8 Feb 2023 42nd LS2021 726 73 392ms 24 Nov 2023 42nd dokutan 726 73 413ms 14 Jul 2025 44th Meowsan91 🇨🇿 707 75 397ms 21 Nov 2021 45th pan4ever 697 76 432ms 21 Nov 2021 45th hamhub7 697 76 388ms 26 Aug 2022 45th Matgc04 697 76 385ms 23 Feb 2024 45th Squimbletin 697 76 399ms 22 Apr 2025 45th mwarvik 🇳🇴 697 76 441ms 10 days ago 50th CarsonChr 🇺🇸 679 78 396ms 7 Apr 2024 51st hyvyys 671 79 400ms 21 Nov 2021 52nd aliakseikalosha 663 80 417ms 21 Nov 2021 52nd oren0 663 80 397ms 21 Nov 2021 52nd adlerzei 663 80 436ms 5 May 2022 52nd arctouch-sergeymetlov 663 80 391ms 21 Jun 2023 52nd ElysiaVesper 663 80 394ms 19 Nov 2023 52nd Re-Adventures 🇮🇳 663 80 396ms 15 Apr 2025 58th tdkkdt 🇷🇺 654 81 383ms 21 Nov 2021 58th tomh1012 654 81 396ms 21 Nov 2021 58th MLPdiscord 654 81 391ms 10 Jan 2022 58th josephdwalker 654 81 375ms 14 Nov 2023 62nd ILMTitan 646 82 413ms 21 Nov 2021 62nd Romain-1 🇫🇷 646 82 425ms 1 Jun 2022 62nd arctouch-cristiannevianna 646 82 407ms 23 May 2023 62nd kkoenig 646 82 412ms 25 Dec 2023 62nd FreyLuis 646 82 432ms 17 Jan 2024 62nd michelebastione 🇮🇹 646 82 424ms 27 Aug 2025 68th castur1 639 83 444ms 3 Feb 2022 69th JDiLenarda 🇫🇷 631 84 401ms 21 Nov 2021 69th najs91 631 84 399ms 21 Nov 2021 69th bac0id 631 84 402ms 22 Sep 2023 69th epic-programmer-guy 631 84 416ms 19 Dec 2023 69th QzLP2P 631 84 417ms 29 Mar 2024 69th malworthy 631 84 422ms 16 Aug 2024 69th arcpolaris 631 84 425ms 27 Mar 2025 76th leth4 624 85 404ms 5 Jul 2023 76th CaedenHarper 🇨🇦 624 85 397ms 17 Oct 2025 76th Adix-null 🇱🇹 624 85 464ms 10 Nov 2025 79th ericlangedijk 🇸🇮 616 86 424ms 16 Mar 2022 79th Betuaredead 616 86 373ms 4 Jan 2023 1–80 of 145 Next Last