5040 and other Anti-Prime Numbers - Numberphile

Dr James Grime discusses highly composite numbers.
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NUMBERPHILE

Videos by Brady Haran

[thevoicesoflogic]

Confession, I would not have clicked on the video if it said "Highly Composite Numbers" I wanted to know what the anti-prime was

[toadstar]

Yet *every* time I make a batch of 12 cookies, there's *always* 5 people to share with. Time to make 5040 cookies.

[novelpoem]

Fun Fact:
5039- Prime
5040- Anti Prime
5041- Square


I wonder if there is any other combination of three consecutive numbers with these properties!

[friendofbeaver]

Last year, at age 59, I was at the prime of my life. I am in the composite (anti-prime) of my life now. On my birthday, I will start another prime year.

[umbreon]

5040=7! btw. Just if anyone was wondering why so many factors.

[Talamare]

Wikipedia "A highly composite number (or anti-prime)"

ITS

[RobloxKid]

I love how 2, a literal PRIME number is also a highly COMPOSITE number.

[leewenyeong]

James grime : probably the most enthusiastic mathematician alive

[Raptremrum]

So 2 is prime, but also anti-prime...

[tuxedo_productions]

The prefix 'Anti-' Makes every word more interesting!

[PaulPower]

I'm a fan of the highly composite number 720, 720 as the smallest number divisible by everything from 1 to 16 (since it's 720 x 1001, and 1001 is 7 x 11 x 13 - with 720 taking care of all the other factors) - plus it also looks pretty neat with the repeated digits.

[MrBallinmangosocks]

Numberphile has taught me that if anything cool happened in math, Ramanujan had something to do with it

[karlmuster]

I learned about highly composite numbers the hard way. In 4th grade we played a dice game where you're on a number N, you roll the number D, then the number of steps you move is the remainder of N/D. First one to 100 wins. I landed on 60, and it took me a few turns to realize I lost.

[Cowboymeisje]

"The third thing that you may have noticed..."

You flatter me, thricely.

[maxj]

I love watching this guy talk. His energy is infectious!

[aragonaut]

I will refer to highly composite numbers as anti primes from now on

[LiftPizzas]

I bet they all look nice when written in base 12, too.

[DaVince]

12 is incredibly useful for web design, where you might want very flexible column layouts. If you have a grid of 12 columns, you could lay out a website into 1, 2, 3, 4, 6 or 12 parts or any combination thereof very easily.

Just a little non-math tidbit. :P

[jucom]

The first thing i thought when he said its an antiprime is: 2 is the only prime and antiprime at the same time

[phlimy]

Cool! Let's all count in base 5040 for a much more practical everyday life! :D