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 160th zx5b 671 76 2ms 11 Dec 2020 160th starxingchenc 671 76 2ms 31 May 2021 160th HumanoidCPU 671 76 1ms 24 Feb 2024 164th meientau 662 77 1ms 11 May 2019 164th osmith93 662 77 1ms 7 Dec 2019 164th MaxElf999 662 77 1ms 12 Dec 2022 167th mickmurci 654 78 2ms 30 Dec 2024 168th AforAmpere 646 79 1ms 15 Jun 2020 168th ACMichels 646 79 1ms 14 Aug 2021 168th narad-muni 🇮🇳 646 79 1ms 6 May 2022 168th NickTheEASDude 🇺🇸 646 79 1ms 27 Feb 2024 172nd loooph 638 80 1ms 2 Aug 2020 172nd agrukuki 638 80 1ms 2 Oct 2020 172nd tomh1012 638 80 2ms 10 Nov 2020 172nd AaronHe7 638 80 1ms 21 Nov 2022 176th StHagel 630 81 2ms 18 Aug 2020 176th mloumeau 630 81 2ms 19 Jan 2021 176th alexvitkov 630 81 1ms 5 Aug 2022 176th xnacly 🇩🇪 630 81 1ms 6 Jul 2023 176th mikiymk 630 81 1ms 21 Sep 2023 181st jhunterkohler 622 82 1ms 19 May 2021 181st jgbaldwinbrown 622 82 1ms 1 Sep 2021 181st BruceMcRooster 622 82 1ms 24 Mar 2022 181st Jaro32768 🇸🇰 622 82 4ms 8 Feb 2024 181st trinityy-7 622 82 2ms 6 Mar 2024 186th funkkiy 🇧🇷 614 83 1ms 13 Sep 2023 186th Us1ngTh3Hub 614 83 2ms 2 Apr 2024 186th LHLaurini 🇧🇷 614 83 1ms 1 May 2024 186th elttil 614 83 2ms 15 Jun 2024 186th rifatx 614 83 1ms 16 Jul 2024 191st generot 🇧🇬 607 84 1ms 3 Jul 2020 191st resetcentral 607 84 2ms 21 May 2022 191st Mabeloid 🇳🇴 607 84 2ms 21 Oct 2025 194th Waterperry 600 85 2ms 2 Nov 2021 195th aubergine-sauce 593 86 1ms 20 Sep 2023 196th chunky 586 87 1ms 2 Oct 2020 196th Evoniuk 586 87 1ms 31 May 2021 196th AIn0n 586 87 2ms 22 Aug 2021 196th Adrien-AM 586 87 1ms 26 Dec 2021 196th Haksell 🇦🇶 586 87 1ms 28 Feb 2023 196th acotis 586 87 1ms 19 Feb 2025 202nd jngbsn 580 88 1ms 2 Mar 2019 202nd TornadoCookie 580 88 2ms 17 Oct 2022 204th godraadam 573 89 2ms 16 Nov 2020 204th kallmi28 🇨🇿 573 89 2ms 10 Oct 2023 204th ehulinsky 🇺🇸 573 89 1ms 18 Feb 2024 204th 0dyse 573 89 1ms 6 May 2025 204th SirObby 🇫🇮 573 89 2ms 18 Oct 2025 209th heypwesto 🇳🇿 567 90 1ms 12 Apr 2021 209th Pyro569 567 90 1ms 28 Jul 2023 211th ytaki0801 🇯🇵 560 91 2ms 21 Jun 2021 211th james-downey 560 91 2ms 10 Jul 2022 213th mamalakic 554 92 1ms 2 Mar 2023 214th archee303 543 94 2ms 4 Feb 2020 214th msbranicky 543 94 2ms 22 Aug 2023 214th BpbjsGreen 🇨🇳 543 94 2ms 7 Jul 2024 214th aDwarfNamedUrist 543 94 1ms 11 Sep 2024 218th nwdamgaard 537 95 2ms 19 Dec 2021 219th rachelambda 531 96 3ms 7 Jun 2020 219th trist224 🇫🇷 531 96 1ms 28 Nov 2022 221st olivermrose 🇺🇸 526 97 2ms 30 Sep 2021 222nd ldoodle 520 98 1ms 25 Aug 2022 222nd NeatCrown 🇨🇦 520 98 1ms 14 Dec 2022 224th pdewilde 515 99 2ms 18 Oct 2019 224th shibacho 🇯🇵 515 99 1ms 29 Mar 2022 226th veehz 510 100 1ms 21 Feb 2023 226th Giantnoodlemonster 510 100 2ms 2 Nov 2024 228th Indivicivet 505 101 2ms 15 Mar 2021 228th cnelson20 505 101 2ms 8 Aug 2022 230th drkameleon 🇪🇸 500 102 1ms 28 Jan 2020 230th hyvyys 500 102 1ms 21 Sep 2020 230th bbb651 🇮🇱 500 102 2ms 25 Nov 2020 233rd Sephirem98 490 104 2ms 26 Oct 2023 234th BuoyantPigeon 486 105 1ms 10 Aug 2019 234th adoxography 486 105 1ms 10 Oct 2019 234th ryguyNelson 486 105 1ms 1 Oct 2020 234th atazzam 🇺🇸 486 105 2ms 18 Sep 2024 238th barbu110 477 107 2ms 5 Dec 2019 238th dillon-duncando 477 107 1ms 24 Dec 2021 238th sm1lko 477 107 1ms 9 Dec 2022 First Prev 161–240 of 283 Next Last