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 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 Apéry’s Constant Binary Lambda Calculus Connect Four 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 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 ><> ALGOL 68 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 ArkScript 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 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 ArkScript 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 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 Apéry’s Constant Binary Lambda Calculus Connect Four 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 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 79th LorenzoDeGaspari 836 61 1ms 20 Jun 2022 79th jaxmattfair 🇺🇸 836 61 2ms 31 Aug 2022 79th angelsz1 836 61 1ms 12 Sep 2022 79th slerpyyy 🇩🇪 836 61 2ms 31 Oct 2022 79th mathb0y512 836 61 267ms 16 Nov 2022 79th stefangimmillaro 836 61 1ms 18 Sep 2023 79th two-bad 🇬🇧 836 61 1ms 26 Nov 2023 79th orthoplex 🇨🇽 836 61 1ms 19 Jul 2024 89th YellowBunnyGit 823 62 1ms 2 Jan 2021 89th peculiarination 823 62 2ms 29 Apr 2021 89th TheHammerBro 823 62 1ms 5 May 2021 89th nyoshe 823 62 2ms 24 Sep 2023 89th warmCabin 823 62 1ms 10 Nov 2023 94th TomatOid 810 63 1ms 12 May 2021 94th AndreaNeti 810 63 1ms 16 Jun 2022 94th Vinterion 810 63 1ms 31 Oct 2023 94th Jonatan6 🇩🇰 810 63 2ms 22 Apr 2024 94th mttcrn 810 63 1ms 21 Mar 2025 94th Maltaran 🇵🇱 810 63 2ms 31 hours ago 100th mokymok 🇺🇸 797 64 1ms 21 Jul 2021 100th Ripick 797 64 1ms 18 Jul 2022 100th jhpaques 🇫🇷 797 64 1ms 4 Dec 2022 100th CatsAreFluffy 797 64 1ms 15 Jan 2023 104th pineapplehunter 785 65 2ms 22 May 2019 104th simontime 785 65 1ms 14 Sep 2020 104th Alesun 🇮🇹 785 65 2ms 15 Jan 2021 107th oschmidh 773 66 1ms 19 Nov 2020 107th LordAzyks 🇫🇷 773 66 1ms 22 Jun 2022 109th speles 🇺🇦 761 67 1ms 31 Oct 2023 109th RealAMC 🇳🇿 761 67 2ms 27 Nov 2023 109th Lv0Sys 🇵🇱 761 67 1ms 3 Jun 2025 112th VictorChemin 🇫🇷 750 68 1ms 24 Nov 2021 112th KenanHanke 750 68 2ms 20 Feb 2023 112th f-tucker 750 68 1ms 8 Jan 2024 112th heanyang1 750 68 1ms 24 May 2025 112th Maashau 750 68 2ms 2 Dec 2025 117th cmayer777 739 69 1ms 7 Nov 2022 117th 5quiwyrm 739 69 1ms 28 Jul 2025 117th tsschepens 739 69 2ms 2 days ago 120th jlangvand 729 70 1ms 9 Aug 2021 120th shellbertt 🇨🇦 729 70 2ms 30 Nov 2021 120th annaproxy 729 70 1ms 4 Jun 2023 120th elgan65536 🇺🇸 729 70 1ms 11 Nov 2023 120th gastropner 729 70 1ms 11 Feb 2025 125th alexjlaberge 718 71 2ms 22 Jul 2020 125th RYNO8 718 71 2ms 7 Dec 2021 125th Heathcorp 🇦🇺 718 71 1ms 16 Feb 2022 125th bac0id 718 71 1ms 26 Sep 2023 125th H3Rol4x 718 71 1ms 7 Dec 2023 125th jupj 🇫🇮 718 71 2ms 19 Feb 2024 131st shaneliu-zf 🇹🇼 708 72 1ms 3 Jul 2020 131st Re-Adventures 🇮🇳 708 72 2ms 22 Mar 2021 131st wansacis 🇩🇪 708 72 1ms 20 Aug 2021 131st loganmacdougall 🇨🇦 708 72 1ms 6 Nov 2021 131st Natanaelel 🇸🇪 708 72 2ms 7 Dec 2021 131st Betuaredead 708 72 1ms 4 Jan 2023 131st LogicalJoe 708 72 1ms 2 May 2023 131st Grrisly 708 72 1ms 3 Nov 2023 131st licekto 708 72 2ms 25 Feb 2024 131st oscargeerts 708 72 1ms 26 Jun 2025 131st xiaoyiming123 708 72 1ms 12 Jul 2025 131st Babafaba 708 72 2ms 15 Oct 2025 131st luuumine 🇫🇷 708 72 2ms 10 Nov 2025 131st prestosilver 🇺🇸 708 72 1ms 24 Nov 2025 145th BenAns 699 73 1ms 26 Sep 2020 145th ei14 699 73 1ms 21 Jun 2021 145th ibexq 699 73 1ms 30 Sep 2022 145th User2654 699 73 1ms 10 Feb 2023 145th Luca2812 699 73 2ms 18 Jun 2024 145th solisolu 699 73 1ms 10 Nov 2025 151st ramytarchichy 689 74 1ms 23 Jun 2019 151st LexouDuck 689 74 1ms 24 Oct 2020 151st boxjelly 689 74 1ms 16 Feb 2021 151st pandapawskat 689 74 1ms 2 Sep 2021 151st iakolzin 689 74 2ms 29 May 2022 151st ansgustjd 689 74 2ms 16 May 2023 151st YoranDS 689 74 1ms 29 May 2023 158th g3rrit 680 75 2ms 3 Aug 2020 158th DavidePrea 680 75 1ms 16 Jun 2022 158th Seek64 🇩🇪 680 75 1ms 15 Nov 2022 First Prev 81–160 of 293 Next Last