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 Rectangle Fill 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 Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 1st sisyphus-ppcg 🇦🇺 1,000 34 41ms 22 Feb 2023 1st radarek 🇵🇱 1,000 34 35ms 3 May 2023 1st Lydxn 🇨🇦 1,000 34 39ms 23 Jun 2023 4th GrayJoKing 🇦🇺 971 35 46ms 8 Sep 2021 4th ovs-code 🇩🇪 971 35 46ms 21 Jun 2022 4th Steffan153 🇫🇮 971 35 38ms 5 days ago 7th xsot 🇸🇬 944 36 38ms 25 Nov 2019 7th nwellnhof 🇩🇪 944 36 40ms 14 Feb 2020 7th SirBogman 🇺🇸 944 36 51ms 15 Jun 2020 7th primo-ppcg 🇹🇭 944 36 41ms 8 Oct 2020 7th prplz 🇦🇺 944 36 41ms 23 Oct 2020 7th hiddicop 🇸🇪 944 36 46ms 26 Jan 2021 7th JayXon 🇺🇸 944 36 42ms 11 Feb 2021 7th orthoplex 🇨🇽 944 36 47ms 3 Apr 2022 7th jared-hughes 944 36 52ms 9 Sep 2022 7th stefangimmillaro 944 36 41ms 30 Sep 2022 7th MeWhenI 🇻🇦 944 36 37ms 10 Oct 2022 7th OhmNomNom 944 36 39ms 15 Oct 2022 7th DialFrost 🇸🇬 944 36 36ms 14 Jan 2023 7th sean-niemann 🇺🇸 944 36 39ms 17 Jan 2023 7th Shanethegamer 🇺🇸 944 36 45ms 8 Mar 2023 7th m-tkach 🇺🇦 944 36 41ms 2 Jun 2023 7th emgordon154 944 36 37ms 7 Aug 2024 7th pardouin 🇫🇷 944 36 38ms 20 Aug 2024 7th lynn 944 36 50ms 20 Sep 2024 7th FlyingPenguin223 944 36 45ms 5 Oct 2024 7th fuzzylojik-golf 🇺🇸 944 36 36ms 5 Jul 2025 7th snoozingnewt 🇨🇦 944 36 42ms 4 Dec 2025 7th dokutan 944 36 53ms 19 days ago 7th madex 🇩🇪 944 36 34ms 3 days ago 31st UladzimirSukharukau 919 37 55ms 9 May 2018 31st janlelis 919 37 42ms 21 Jan 2021 31st gilufin 919 37 45ms 30 May 2021 31st NewDefectus 🇮🇱 919 37 47ms 8 Oct 2021 31st akshatj27 🇦🇶 919 37 47ms 11 Jan 2022 31st Irratix 🇳🇱 919 37 40ms 4 Mar 2022 31st janbehrens 🇩🇪 919 37 40ms 30 May 2022 31st ls-samer-abuthaher 919 37 43ms 7 Oct 2022 31st Yewzir 🇧🇪 919 37 39ms 12 Oct 2023 31st olleicua 🇺🇸 919 37 38ms 13 Feb 2024 31st qwertyuiop3 🇷🇺 919 37 44ms 6 Jun 2025 31st Natanaelel 🇸🇪 919 37 40ms 4 Jul 2025 31st edsrzf 🇳🇿 919 37 48ms 14 Feb 2026 44th adoxography 895 38 46ms 22 Jul 2018 44th acornellier 895 38 56ms 8 Dec 2018 44th hrrs01 895 38 48ms 29 Jan 2019 44th handisb 895 38 46ms 18 Oct 2019 44th mogron 895 38 41ms 14 Dec 2019 44th proton 🇩🇪 895 38 47ms 3 Jun 2020 44th Waffle3z 895 38 54ms 12 Oct 2020 44th KatieLG 🇬🇧 895 38 37ms 3 Nov 2020 44th jaredcrystal 🇺🇸 895 38 42ms 15 Dec 2020 44th anter69 🇭🇺 895 38 37ms 3 Aug 2021 44th olivermrose 🇺🇸 895 38 45ms 10 Sep 2021 44th yzhs 🇩🇪 895 38 45ms 20 Jul 2022 44th 4hg 🇺🇸 895 38 49ms 13 Aug 2022 44th Andriamanitra 🇫🇮 895 38 60ms 25 Aug 2022 44th rniii 895 38 59ms 21 Aug 2023 44th wlaud9 895 38 40ms 10 Feb 2024 44th error256 895 38 46ms 13 May 2024 44th aydamak 895 38 47ms 15 May 2024 44th LostSyntax21 🇬🇧 895 38 39ms 10 Sep 2024 44th tatzyr 🇯🇵 895 38 38ms 20 Mar 2025 44th ejini6969 895 38 43ms 14 Jun 2025 44th csharpython 895 38 39ms 2 Aug 2025 44th vishal-mohanty 895 38 38ms 25 Aug 2025 44th blaztoma 🇱🇹 895 38 40ms 12 Oct 2025 44th AetherQuantity 895 38 37ms 21 Oct 2025 44th Matter1024 🇮🇳 895 38 38ms 14 Nov 2025 44th Lv0Sys 🇵🇱 895 38 37ms 1 Dec 2025 44th denkyuu1 895 38 38ms 6 Feb 2026 72nd graft 872 39 37ms 21 Dec 2018 72nd ConorOBrien-Foxx 872 39 65ms 2 Mar 2019 72nd sk- 872 39 51ms 11 Sep 2019 72nd sapphyrus 872 39 38ms 18 Feb 2020 72nd meenie 872 39 40ms 15 Feb 2021 72nd schachmattmatt 872 39 39ms 18 Aug 2021 72nd kinoute 🇫🇷 872 39 40ms 10 Sep 2021 72nd scpchicken 🇵🇼 872 39 48ms 19 Mar 2022 72nd aksyristos 872 39 48ms 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