Prime numbers | Integer sequences
A Fortunate number, named after Reo Fortune, is the smallest integer m > 1 such that, for a given positive integer n, pn# + m is a prime number, where the primorial pn# is the product of the first n prime numbers. For example, to find the seventh Fortunate number, one would first calculate the product of the first seven primes (2, 3, 5, 7, 11, 13 and 17), which is 510510. Adding 2 to that gives another even number, while adding 3 would give another multiple of 3. One would similarly rule out the integers up to 18. Adding 19, however, gives 510529, which is prime. Hence 19 is a Fortunate number. The Fortunate number for pn# is always above pn and all its divisors are larger than pn. This is because pn#, and thus pn# + m, is divisible by the prime factors of m not larger than pn. The Fortunate numbers for the first primorials are: 3, 5, 7, 13, 23, 17, 19, 23, 37, 61, 67, 61, 71, 47, 107, 59, 61, 109, etc. (sequence in the OEIS). The Fortunate numbers sorted in numerical order with duplicates removed: 3, 5, 7, 13, 17, 19, 23, 37, 47, 59, 61, 67, 71, 79, 89, 101, 103, 107, 109, 127, 151, 157, 163, 167, 191, 197, 199, ... (sequence in the OEIS). Fortune conjectured that no Fortunate number is composite (Fortune's conjecture). A Fortunate prime is a Fortunate number which is also a prime number. As of 2012, all the known Fortunate numbers are prime. A composite Fortunate number, if one exists, would have to be greater than or equal to pn+12. (Wikipedia).
There are a lot more numbers than I thought there were - MegaFavNumbers
A short video detailing my favorite number larger than 1 million! There are so many numbers out there it was hard to choose from, but Iโm glad I could participate in the #MegaFavNumbers series
From playlist MegaFavNumbers
MegaFavNumbers - Unique-digited-prime-number
I made this video as a part of the MegaFavNumbers project. In this project, YouTubers make videos about their favorite number above 1 million. The number I chose is 1,023,467. It is the smallest 7 -digit prime number with distinct digits. This is my first YouTube video. I feel that if I
From playlist MegaFavNumbers
From playlist Factors, Prime Factors, and Least Common Factors
MegaFavNumbers: All you need to go Mega is just 3 bytes
Joining the maths #MegaFavNumbers thing just because I like it. My favourity number of over 1 million is a number I remember ever since I was a child. It is used often and well known. Watch to find out why. 16777216
From playlist MegaFavNumbers
937 is a PRIME-arily Awesome Number!
937 is a surprising remarkable number - find out why here! Sponsored by Squarespace - get your own beautiful website at: http://squarespace.com/drawcuriosity Use CODE 'DC' to get 10% off at check out I've been wanting to make another video on maths for ages, so boom, here you go, recreati
From playlist Mathematics
Exploring Modern Fortran Basics
Reveal the amazing possibilities of modern Fortran, the natively parallel and dominant language of high-performance computing. ๐๐๐ This video refers to the book Modern Fortran by Milan Curcic | http://mng.bz/Vy8x For 40 % off this book use discount code: watchcurcic40 ๐๐๐ About the book:
From playlist Software Development
MegaFavNumbers | The Case of Too Many Lottery Winners
#MegaFavNumbers How did so many people win the Powerball?
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#MegaFavNumbers Whatโs your Mega Favourite Number?
From playlist MegaFavNumbers
You Need To Know About This Number
The first 1,000 people to use this link will get a 1 month free trial of Skillshare: https://skl.sh/brithemathguy01211 What are unique numbers? This is my list of interesting numbers and interesting number facts! These are some of my favorite numbers. :) โบBECOME A CHANNEL MEMBER https://
From playlist Fun and Amazing Math
#MegaFavNumbers My favourite Number is 179 digits long!!!
#MegaFavNumbers sorry I had made mistakes about the prime factors. it was supposed to be 3ร3ร5ร.... but I had taken it be 3ร5ร5ร... and I have corrected below 31 980 599 086 523 546 548 147 351 491 272 676 211 458 715 997 231 784 732 063 781 637 489 066 745 716 387 150 725 397 533 911 7
From playlist MegaFavNumbers
Ex: Determine a Number that is Less Than and Greater than Using a Specific Place Value
This video provides examples of how to find a number that is less than and greater than a given number using a specific place value. Search Video Library at http://www.mathispower4u.wordpress.com
From playlist Whole Numbers: Place Value and Writing Numbers
Film Interviews with Leading Thinkers: John Coates [2008]
An interview on the life and work of Professor John Coates, Sadleirian Professor of mathematics at the University of Cambridge. Filmed on Monday 25th February by Alan Macfarlane and edited and summarised by Sarah Harrison, lasts about two hours. Created: 2011-03-18 16:27 Collection: Fil
From playlist Mathematics
Suspect Symbols at Upminster Bridge
Upminster Bridge has some fairly notorious floor decoration. But is it bad taste or bad luck? Ko-Fi: https://ko-fi.com/jagohazzard Patreon: https://www.patreon.com/jagohazzard
From playlist London
"Fortunately, Unfortunately": How to Tell Whether a Number Is Prime #MegaFavNumbers
How can we tell whether or not a large integer is prime? Well, there's some bad news and some good news (and more bad news, and more good news, and...) My contribution to #MegaFavNumbers (and my first go at YouTube, so, you know, go easy on me). Matt Parker's video, which got me thinking
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WE DISCOVERED HYPERCAR HEAVEN | FERRARI, BUGATTI, PORSCHE
#hypercar #carcollection Hypercars! They are exclusive, fast, and on every car persons wall! Hypercars are the pinnacle of engineering and speed. On this tour, we explore the Center of Effort Winery in Central California and discover the amazing collection of Bill Swanson. Bill is an enth
From playlist Ultimate Collection Tours | World's Rarest Cars
25c3: Hacker Jeopardy (English interpretation)
Speakers: Stefan 'Sec' Zehl, Ray The ultimative Hacker-Quizshow English Interpretation and video transmission of the event in Saal 1 The famous quiz -- of course with topics you will never see in TV. Hacker Jeopardy is a quiz in the well-known answer-question-scheme. We will
From playlist 25C3: Nothing to hide
American Pickers: Coin-Operated Grandma (Season 17, Episode 8) | History
Mike picks a coin-operated fortune teller machine that could be worth $10k once it's fully restored in this clip from Season 17, Episode 8, "Queen of Fortune". #AmericanPickers Subscribe for more from American Pickers and other great HISTORY shows: http://histv.co/SubscribeHistoryYT Watc
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How Parabolas Can Help Describe Nature and Business | Fortune's Algorithm #some2
Submission For Summer Of Math Exposition round 2. Geogebra 3D Graphing Calculator - https://www.geogebra.org/3d?lang=en 3b1b Cone Conic Section - https://www.youtube.com/watch?v=pQa_tWZmlGs Demos Interactive Proof - https://www.desmos.com/calculator/ujh5y7e10z 00:00 - Introduction (Wh
From playlist Summer of Math Exposition 2 videos