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) Taxicab Numbers 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 Huffman Encoder NFA Simulator Nim Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic 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) Taxicab Numbers 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 Huffman Encoder NFA Simulator Nim Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 101st mokymok 🇺🇸 797 64 1ms 21 Jul 2021 101st Ripick 797 64 1ms 18 Jul 2022 101st jhpaques 🇫🇷 797 64 1ms 4 Dec 2022 101st CatsAreFluffy 797 64 1ms 15 Jan 2023 105th pineapplehunter 785 65 2ms 22 May 2019 105th simontime 785 65 1ms 14 Sep 2020 105th Alesun 🇮🇹 785 65 1ms 15 Jan 2021 108th oschmidh 773 66 1ms 19 Nov 2020 108th LordAzyks 🇫🇷 773 66 1ms 22 Jun 2022 110th speles 🇺🇦 761 67 1ms 31 Oct 2023 110th RealAMC 🇳🇿 761 67 1ms 27 Nov 2023 110th Lv0Sys 🇵🇱 761 67 1ms 3 Jun 2025 113th VictorChemin 🇫🇷 750 68 1ms 24 Nov 2021 113th KenanHanke 750 68 2ms 20 Feb 2023 113th f-tucker 750 68 1ms 8 Jan 2024 113th heanyang1 750 68 1ms 24 May 2025 113th Maashau 750 68 2ms 2 Dec 2025 113th tsschepens 750 68 1ms 4 Mar 2026 113th solisolu 750 68 2ms 18 days ago 120th cmayer777 739 69 1ms 7 Nov 2022 120th 5quiwyrm 739 69 1ms 28 Jul 2025 122nd jlangvand 729 70 1ms 9 Aug 2021 122nd shellbertt 🇨🇦 729 70 2ms 30 Nov 2021 122nd annaproxy 729 70 1ms 4 Jun 2023 122nd elgan65536 🇺🇸 729 70 1ms 11 Nov 2023 122nd gastropner 729 70 1ms 11 Feb 2025 127th alexjlaberge 718 71 2ms 22 Jul 2020 127th RYNO8 718 71 2ms 7 Dec 2021 127th Heathcorp 🇦🇺 718 71 1ms 16 Feb 2022 127th bac0id 718 71 1ms 26 Sep 2023 127th H3Rol4x 718 71 1ms 7 Dec 2023 127th jupj 🇫🇮 718 71 2ms 19 Feb 2024 133rd shaneliu-zf 🇹🇼 708 72 1ms 3 Jul 2020 133rd Re-Adventures 🇮🇳 708 72 2ms 22 Mar 2021 133rd wansacis 🇩🇪 708 72 1ms 20 Aug 2021 133rd loganmacdougall 🇨🇦 708 72 1ms 6 Nov 2021 133rd Natanaelel 🇸🇪 708 72 2ms 7 Dec 2021 133rd Betuaredead 708 72 1ms 4 Jan 2023 133rd LogicalJoe 708 72 1ms 2 May 2023 133rd Grrisly 708 72 1ms 3 Nov 2023 133rd licekto 708 72 2ms 25 Feb 2024 133rd oscargeerts 708 72 1ms 26 Jun 2025 133rd xiaoyiming123 708 72 1ms 12 Jul 2025 133rd Babafaba 708 72 2ms 15 Oct 2025 133rd luuumine 🇫🇷 708 72 2ms 10 Nov 2025 133rd prestosilver 🇺🇸 708 72 1ms 24 Nov 2025 147th BenAns 699 73 1ms 26 Sep 2020 147th ei14 699 73 1ms 21 Jun 2021 147th ibexq 699 73 1ms 30 Sep 2022 147th User2654 699 73 1ms 10 Feb 2023 147th Luca2812 699 73 2ms 18 Jun 2024 152nd ramytarchichy 689 74 1ms 23 Jun 2019 152nd LexouDuck 689 74 1ms 24 Oct 2020 152nd boxjelly 689 74 1ms 16 Feb 2021 152nd pandapawskat 689 74 1ms 2 Sep 2021 152nd iakolzin 689 74 1ms 29 May 2022 152nd ansgustjd 689 74 2ms 16 May 2023 152nd YoranDS 689 74 1ms 29 May 2023 159th g3rrit 680 75 2ms 3 Aug 2020 159th DavidePrea 680 75 1ms 16 Jun 2022 159th Seek64 🇩🇪 680 75 1ms 15 Nov 2022 159th weliveinhell 🇭🇹 680 75 1ms 14 Oct 2023 163rd AkashTandon167 671 76 1ms 1 Dec 2019 163rd zx5b 671 76 1ms 11 Dec 2020 163rd starxingchenc 671 76 2ms 31 May 2021 163rd HumanoidCPU 671 76 1ms 24 Feb 2024 167th meientau 662 77 1ms 11 May 2019 167th osmith93 662 77 1ms 7 Dec 2019 167th MaxElf999 662 77 1ms 12 Dec 2022 167th matricronia 662 77 2ms 2 Feb 2026 167th bpharaldsson 662 77 2ms 13 Feb 2026 167th RodAlc24 🇪🇸 662 77 2ms 21 Feb 2026 173rd mickmurci 654 78 2ms 30 Dec 2024 174th AforAmpere 646 79 1ms 15 Jun 2020 174th ACMichels 646 79 1ms 14 Aug 2021 174th narad-muni 🇮🇳 646 79 1ms 6 May 2022 174th NickTheEASDude 🇺🇸 646 79 1ms 27 Feb 2024 174th isaiah0311 🇺🇸 646 79 2ms 26 Jan 2026 179th loooph 638 80 1ms 2 Aug 2020 179th agrukuki 638 80 1ms 2 Oct 2020 179th tomh1012 638 80 2ms 10 Nov 2020 179th AaronHe7 638 80 1ms 21 Nov 2022 179th kasarino 638 80 2ms 2 Feb 2026 184th StHagel 630 81 1ms 18 Aug 2020 184th mloumeau 630 81 2ms 19 Jan 2021 184th alexvitkov 630 81 1ms 5 Aug 2022 184th xnacly 🇩🇪 630 81 1ms 6 Jul 2023 184th mikiymk 630 81 1ms 21 Sep 2023 189th jhunterkohler 622 82 1ms 19 May 2021 189th jgbaldwinbrown 622 82 1ms 1 Sep 2021 189th BruceMcRooster 622 82 1ms 24 Mar 2022 189th Jaro32768 🇸🇰 622 82 2ms 8 Feb 2024 189th trinityy-7 622 82 1ms 6 Mar 2024 194th funkkiy 🇧🇷 614 83 1ms 13 Sep 2023 194th Us1ngTh3Hub 614 83 2ms 2 Apr 2024 194th LHLaurini 🇧🇷 614 83 1ms 1 May 2024 194th elttil 614 83 1ms 15 Jun 2024 194th rifatx 614 83 1ms 16 Jul 2024 199th generot 🇧🇬 607 84 1ms 3 Jul 2020 199th resetcentral 607 84 2ms 21 May 2022 First Prev 101–200 of 295 Next Last