Prime Numbers in C# in bytes. 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 Dragon Curve 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 Dragon Curve 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 Bytes Time Submitted 1st JayXon 🇺🇸 1,000 62 418ms 13 Jun 2023 1st Lydxn 🇨🇦 1,000 62 440ms 1 Jul 2023 1st AdrienHache 🇫🇷 1,000 62 419ms 24 Dec 2025 4th stefangimmillaro 984 63 427ms 12 Jun 2023 4th namelessiw 984 63 434ms 9 Aug 2024 4th fuzzylojik-golf 🇺🇸 984 63 386ms 31 Jul 2025 7th nwellnhof 🇩🇪 969 64 379ms 21 Dec 2021 7th btnlq 969 64 403ms 10 Mar 2023 7th MeWhenI 🇻🇦 969 64 402ms 26 Jul 2023 7th sean-niemann 🇺🇸 969 64 407ms 23 Dec 2024 7th WalrusesAreAwesome 969 64 395ms 11 Jan 2025 7th prplz 🇦🇺 969 64 455ms 23 Jan 2025 7th Yax42 🇫🇷 969 64 406ms 1 Aug 2025 7th KasperKivimaeki 🇫🇮 969 64 415ms 22 Dec 2025 7th amazingalek 🇳🇴 969 64 414ms 29 Dec 2025 16th Attero 🇸🇪 954 65 485ms 21 Nov 2021 16th billings7 🇬🇧 954 65 387ms 21 Nov 2021 16th KatieLG 🇬🇧 954 65 450ms 21 Nov 2021 16th primo-ppcg 🇹🇭 954 65 382ms 21 Nov 2021 16th tomtheisen 🇺🇸 954 65 380ms 21 Nov 2021 16th roavin 954 65 360ms 29 Jun 2022 16th annaproxy 954 65 409ms 19 May 2023 16th b-illy 🇬🇧 954 65 438ms 21 Jan 2025 16th albanian-laundromat 🇺🇸 954 65 420ms 24 Dec 2025 16th DialFrost 🇸🇬 954 65 418ms 31 Dec 2025 26th ScottHamper 939 66 379ms 21 Nov 2021 26th Shanethegamer 🇺🇸 939 66 371ms 28 Dec 2021 26th Yewzir 🇧🇪 939 66 378ms 8 May 2023 26th janbehrens 🇩🇪 939 66 360ms 27 Nov 2023 26th SirBogman 🇺🇸 939 66 357ms 3 Jan 2024 31st KrausRaus 🇺🇸 912 68 388ms 26 Jun 2023 31st matanberstadt 912 68 447ms 16 hours ago 33rd Gaddy 🇫🇷 899 69 394ms 1 Jun 2022 33rd postie77 899 69 381ms 18 Apr 2023 35th Irratix 🇳🇱 886 70 378ms 13 Dec 2021 35th Ripick 886 70 363ms 18 Jul 2022 35th CatsAreFluffy 886 70 375ms 28 Nov 2022 38th sultan 873 71 381ms 2 Apr 2024 39th tkr-sh 🇰🇵 861 72 375ms 4 May 2022 39th ChrisTheisen 861 72 387ms 19 Dec 2022 39th mathb0y512 861 72 368ms 8 Feb 2023 42nd LS2021 849 73 358ms 24 Nov 2023 42nd dokutan 849 73 417ms 14 Jul 2025 44th Meowsan91 🇨🇿 827 75 389ms 21 Nov 2021 44th SmartK8 🇨🇿 827 75 371ms 13 Nov 2022 46th pan4ever 816 76 381ms 21 Nov 2021 46th hamhub7 816 76 398ms 26 Aug 2022 46th Matgc04 816 76 353ms 23 Feb 2024 46th Squimbletin 816 76 416ms 22 Apr 2025 46th mwarvik 🇳🇴 816 76 411ms 5 Jan 2026 51st CarsonChr 🇺🇸 795 78 403ms 7 Apr 2024 51st kasarino 795 78 422ms 17 Mar 2026 51st scpchicken 🇵🇼 795 78 411ms 37 hours ago 54th hyvyys 785 79 366ms 21 Nov 2021 55th aliakseikalosha 775 80 471ms 21 Nov 2021 55th oren0 775 80 402ms 21 Nov 2021 55th adlerzei 775 80 442ms 5 May 2022 55th arctouch-sergeymetlov 775 80 386ms 21 Jun 2023 55th ElysiaVesper 775 80 358ms 19 Nov 2023 55th Re-Adventures 🇮🇳 775 80 437ms 15 Apr 2025 55th bpharaldsson 775 80 426ms 29 Jan 2026 62nd tdkkdt 🇷🇺 765 81 394ms 21 Nov 2021 62nd tomh1012 765 81 426ms 21 Nov 2021 62nd MLPdiscord 765 81 379ms 10 Jan 2022 62nd josephdwalker 765 81 389ms 14 Nov 2023 66th ILMTitan 756 82 377ms 21 Nov 2021 66th Romain-1 🇫🇷 756 82 414ms 1 Jun 2022 66th arctouch-cristiannevianna 756 82 427ms 23 May 2023 66th kkoenig 756 82 356ms 25 Dec 2023 66th FreyLuis 756 82 384ms 17 Jan 2024 66th michelebastione 🇮🇹 756 82 420ms 27 Aug 2025 72nd castur1 747 83 386ms 3 Feb 2022 73rd JDiLenarda 🇫🇷 738 84 388ms 21 Nov 2021 73rd najs91 738 84 393ms 21 Nov 2021 73rd bac0id 738 84 437ms 22 Sep 2023 73rd epic-programmer-guy 738 84 376ms 19 Dec 2023 73rd QzLP2P 738 84 385ms 29 Mar 2024 73rd malworthy 738 84 409ms 16 Aug 2024 73rd arcpolaris 738 84 457ms 27 Mar 2025 80th leth4 729 85 416ms 5 Jul 2023 1–80 of 152 Next Last