Niven Numbers in Ruby 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 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 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 Alphabetic Numbers 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 Bytes Time Submitted 72nd Haksell 🇦🇶 872 39 35ms 22 Feb 2023 72nd AlephSquirrel 872 39 37ms 7 Mar 2023 72nd aaronze 🇦🇺 872 39 37ms 17 Sep 2023 72nd TheZwierzLF 🇵🇱 872 39 35ms 17 Dec 2025 85th segiddins 850 40 36ms 24 Aug 2018 85th TFeld00 🇩🇰 850 40 34ms 7 Jun 2019 85th flavono123 850 40 36ms 16 Jul 2019 85th snltd 850 40 35ms 14 Aug 2019 85th n1LS 850 40 35ms 23 Oct 2019 85th jstanley0 850 40 35ms 13 Dec 2020 85th Marin-Kitagawa 850 40 38ms 18 Jul 2021 85th Luj8n 850 40 36ms 12 Nov 2021 85th HallMatthew314 850 40 38ms 5 Dec 2021 85th fynnkroeger 850 40 36ms 30 Apr 2022 85th Ralac07 🇦🇺 850 40 33ms 4 Jul 2024 85th albanian-laundromat 850 40 39ms 1 Oct 2025 85th lacrosse 850 40 35ms 29 Nov 2025 85th Thinkr1 850 40 35ms 3 Feb 2026 99th hugolgst 829 41 35ms 18 May 2019 99th FnControlOption 829 41 35ms 21 Aug 2022 101st 0xddom 810 42 38ms 18 Dec 2019 101st jamespeilunli 810 42 34ms 1 May 2022 101st purp 810 42 36ms 9 Aug 2022 104th robymus 791 43 35ms 17 Sep 2018 105th esmg1 773 44 36ms 22 Aug 2018 105th annaproxy 773 44 35ms 27 Aug 2022 107th tadd 756 45 34ms 16 Apr 2020 107th pandapawskat 756 45 37ms 7 Oct 2021 107th a-apple1234 756 45 36ms 14 Feb 2023 110th idoschor 739 46 35ms 28 Dec 2020 111th reireias 723 47 37ms 31 Jul 2019 112th jacobsmith 680 50 35ms 19 May 2018 113th galloj 🇨🇿 618 55 36ms 18 Aug 2022 113th sreedevk 🇺🇸 618 55 34ms 4 Dec 2022 115th Mortis66666 596 57 36ms 3 Jun 2022 116th catflip 567 60 36ms 18 Oct 2023 117th kenakingkong 540 63 35ms 4 May 2021 118th MiranDaniel 🇨🇿 507 67 35ms 1 Sep 2023 119th boxjelly 500 68 37ms 12 Feb 2021 120th atayarani 486 70 35ms 18 Jan 2019 121st yokasuretsu 459 74 33ms 3 May 2018 122nd graemewalters 436 78 35ms 25 Mar 2019 122nd msbranicky 436 78 35ms 8 Sep 2023 124th michaelrychly 420 81 37ms 5 Jun 2019 125th matricronia 400 85 36ms 6 May 2021 126th JRaspass 🇬🇧 354 96 35ms 19 May 2018 126th retrohun 354 96 35ms 21 Dec 2018 126th ninjawarrior1337 354 96 35ms 1 Dec 2021 126th KatieLG-Transpiler 🇬🇧 354 96 37ms 24 Jun 2022 126th HumanoidCPU 354 96 35ms 8 May 2024 126th Mabeloid 🇳🇴 354 96 35ms 22 Sep 2024 126th CaedenHarper 🇨🇦 354 96 34ms 16 Aug 2025 133rd zstearman3 327 104 33ms 13 Jul 2018 134th mokymok 🇺🇸 266 128 35ms 9 Nov 2021 First Prev 81–134 of 134