Base-dependent integer sequences | Recreational mathematics
In recreational mathematics, a repdigit or sometimes monodigit is a natural number composed of repeated instances of the same digit in a positional number system (often implicitly decimal). The word is a portmanteau of repeated and digit.Examples are 11, 666, 4444, and 999999. All repdigits are palindromic numbers and are multiples of repunits. Other well-known repdigits include the repunit primes and in particular the Mersenne primes (which are repdigits when represented in binary). Repdigits are the representation in base of the number where is the repeated digit and is the number of repetitions. For example, the repdigit 77777 in base 10 is . A variation of repdigits called Brazilian numbers are numbers that can be written as a repdigit in some base, not allowing the repdigit 11, and not allowing the single-digit numbers (or all numbers will be Brazilian). For example, 27 is a Brazilian number because 27 is the repdigit 33 in base 8, while 9 is not a Brazilian number because its only repdigit representation is 118, not allowed in the definition of Brazilian numbers. The representations of the form 11 are considered trivial and are disallowed in the definition of Brazilian numbers, because all natural numbers n greater than two have the representation 11n − 1. The first twenty Brazilian numbers are 7, 8, 10, 12, 13, 14, 15, 16, 18, 20, 21, 22, 24, 26, 27, 28, 30, 31, 32, 33, ... (sequence in the OEIS). (Wikipedia).
DevOps is a word used a lot these days and reading job ads it seems like it's something one person in a team does. It also looks as if I buy the right tools I'm doing DevOps, but is that it? Björn is a programmer with lots of strong opinions, weakly held. When he's not busy changing his mi
From playlist DevOps
Glitch Primes and Cyclops Numbers - Numberphile
Audible: http://www.audible.com/numberphile More links & stuff in full description below ↓↓↓ Simon Pampena on Glitch Primes and Binary Cyclops Numbers. Simon on Twitter: https://twitter.com/mathemaniac Some book recommendations... Love & Math by Edward Frenkel, The Simpsons and their Mat
From playlist Big Numbers on Numberphile
5 Best Practices In DevOps Culture | What is DevOps? | Edureka
🔥𝐄𝐝𝐮𝐫𝐞𝐤𝐚 𝐃𝐞𝐯𝐎𝐩𝐬 𝐏𝐨𝐬𝐭 𝐆𝐫𝐚𝐝𝐮𝐚𝐭𝐞 𝐏𝐫𝐨𝐠𝐫𝐚𝐦 𝐰𝐢𝐭𝐡 𝐏𝐮𝐫𝐝𝐮𝐞 𝐔𝐧𝐢𝐯𝐞𝐫𝐬𝐢𝐭𝐲: https://www.edureka.co/executive-programs/purdue-devops This tutorial explains what is DevOps. It will help you understand some of its best practices in DevOps culture. This video will also provide an insight into how different
From playlist Webinars by Edureka!
Friedman Numbers - Numberphile
Professor Ed Copeland on Friedman Numbers - more below. More links & stuff in full description below ↓↓↓ Thanks to these supporters: Herschal Sanders --- Alex Bozzi --- OK Merli --- Joshua Wilson/Andrew Touchet --- Lê --- plusunim --- Jordan White --- Micky Baeza --- Tracy Parry And of c
From playlist Numberphile Videos
Clojure - the Reader and Evaluator (4/4)
Part of a series teaching the Clojure language. For other programming topics, visit http://codeschool.org
From playlist the Clojure language
MegaFavNumbers 80741592369217430856 One in a Trillion #MegaFavNumbers
Which numbers and their squares can be partitioned into groups of 10 digits that are each pandigital? This video is my first ever YouTube video and was uploaded as part of the #MegaFavNumbers project. See update for a 30 digit example https://youtu.be/9nkinSCyZpQ For more Pandigital R
From playlist MegaFavNumbers
quick review of how to resize an image in Geogebra
From playlist Geogebra
Clojure - the Reader and Evaluator (2/4)
Part of a series teaching the Clojure language. For other programming topics, visit http://codeschool.org
From playlist the Clojure language
Primes without a 7 - Numberphile
James Maynard discusses his proof that infinite primes exist missing each base 10 digit - he uses 7 as his arbitrary example. More links & stuff in full description below ↓↓↓ More videos with James Maynard: http://bit.ly/JamesMaynard The paper on primes with restricted digits: https://ar
From playlist James Maynard on Numberphile
You'd think I'd have better things to do with my time...
From playlist My Other Videos
Here we show a quick way to set up a face in desmos using domain and range restrictions along with sliders. @shaunteaches
From playlist desmos
What Is a radian? Coffee ☕️ + Desmos 🙂 this AM = https://www.desmos.com/calculator/bcgjcpci3k. Also added to https://teacher.desmos.com/activitybuilder/custom/60742b18afd8ae0d274b6efb.
From playlist Desmos Activities, Illustrations, and How-To's
Eteinne Farcot - The Multiradial Represenation of IUT
http://www.nottingham.ac.uk/cmmb/people/etienne.farcot
From playlist Mathematical Shenanigans
An general explanation of the underactive thyroid.
From playlist For Patients
Florian Luca: Fibonacci numbers and repdigits
CIRM VIRTUAL CONFERENCE Recorded during the meeting " Diophantine Problems, Determinism and Randomness" the November 26, 2020 by the Centre International de Rencontres Mathématiques (Marseille, France) Filmmaker: Guillaume Hennenfent Find this video and other talks given by worldwide
From playlist Virtual Conference