The Most Wanted Prime Number - Numberphile

Featuring Neil Sloane.
More links & stuff in full description below ↓↓↓

Note the 17350-digit prime we feature is more accurately classed as a "probable prime" at this time.

NUMBERPHILE

Videos by Brady Haran

[diegomo]

He sounds like he gets out of bed in the morning and is absolutely thrilled he gets to do more math, every single morning

[MonzennCarloMallari]

"Give me a prime"
"2^31 - 1"

Baller move. Brady should do that the next time Matt Parker asks for a number

[renerpho]

Seeing Neil Sloane enjoy his sequences (and talk about them) is always a pleasure. Please do more interviews with him in the future!

[herbieklein]

He always seems like a child who has found something interesting to play with 😍

[LucenProject]

4:39 "I'm not finished. I have another segment." I don't know why, but I really enjoyed that. He loves and can talk about numbers all day.

[arturslunga]

Great, now I can boast about knowing a 17000-digit prime by heart! Thanks

[Alan_Clark]

The largest prime that I know the digits of is Belphegor's Prime:
1 666 1
Thirteen zeros before and after the number of the beast, 31 digits (13 reversed) in all.

[noobxgod]

I would love to hear more from this gentleman, he can be a narrator for some great shows

[yashrawat]

Prime numbers and numberphile videos about them, never get old

[ace_falken]

@numberphile hey! I saw this and thought, "what about concatenating increasing values to the left" i.e. 1, 21, 321, 4321, 54321, etc.
Did a little bit of number crunching and the first one I found was at a starting value of 82.
They exist!
(I was able to speed up my search realizing that 2/3 of these are divisible by 3 and skipping testing those.)
Maybe look for the next one and make a video on it? Prime related videos are always a hit. :)
Anyway.... Loved this video! It inspired the little search I just did.

[VY_Canis_Majoris]

He better live to a hundred or I'm gonna cry

[zatty]

The professor has such a beautiful voice.

[onion]

"It's a story you can tell at parties." I'd love to go to a party where I get to hear Neil Sloane's stories!

[YouennF]

I'm intrigued by the sequences both so important and so hard to evaluate that they have the privilege to be included in the OEIS with only one entry. Tell us more about that please !

[gdclemo]

I expect the most wanted prime number is the private key to some big bank's signing certificate, but this is maybe the coolest (to mathematicians)

[alexandernyberg]

I would like to note that if the step between each number is 2 instead of 1 (so 135... instead of 123...) the first prime is 13, but the first interesting one is 135791113151719

[killermelga]

Now I'd really like to know which sequences in the OEIS contain a single term

[Diapolo]

I got curious and decided to try this - but with base-2 instead of base-10. And I think I found one!

01101110010111011110001001101010111100110111101111, which is 485398038695407, _is a prime_. And it contains the numbers from 0 (which might as well not be there) to 15.

[timsloane]

I love these videos with Neil Sloane. It's very soothing to hear him describe patterns.

[caiohomar]

Huh, this is interesting... I actually got 2 "most wanted primes" in hexadecimal with n < 1000, the first is 123456789ABCD (n = 13) and the other is much larger (n = 211)