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The 22 million digit number and the amazing maths behind primes
PhysOrg ^
| 1/21/16
| Steve Humble
Posted on 02/23/2016 3:09:27 AM PST by LibWhacker
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To: Covenantor
And these geniuses still don’t know how many shots were fired when President Kennedy was killed
21
posted on
02/23/2016 4:40:34 AM PST
by
politicianslie
(What would a terrorist do if he were made POTUS? ANS: Exactly what Hussein Obama is doing!)
To: politicianslie
Not only that, but what red Bernie would do.
To: LibWhacker
I have a minor in math and I have never understood the fascination mathematicians have with primes. Okay, they’re only divisible by themselves and one. So what???
23
posted on
02/23/2016 5:50:30 AM PST
by
IronJack
To: Perchant
To: golux
Lol yes... No fault of the poster but as Cruz would say this article is to primes what Carter was to the Presidency.The Cruz camp would also say prime numbers have withdrawn from consideration and slept with little boys or somesuch.
To: Larry Lucido
To: Larry Lucido
27
posted on
02/23/2016 6:09:34 AM PST
by
NorthMountain
(A plague o' both your houses.)
To: LibWhacker
I've run a GIMPS client for a while. The numbers are so huge now though, that it takes weeks if not months to test a single number. Personally, I think it's astounding that they can factor a number like 2
74207281-1. That number is so large that it is pretty much imaginary. There is nothing in the universe that there is that many of.
I wish my drivers license or SSN were prime. Sadly, they are both divisable by 2. Yup.I'm a nerd.
28
posted on
02/23/2016 7:02:20 AM PST
by
zeugma
(Lon Horiuchi is the true face of the feral government. Remember that. Always.)
To: Travis T. OJustice
Maybe “conservatives” will eat each other alive the way they’ve done the last few times around and we can have Hillary for President!
29
posted on
02/23/2016 7:05:37 AM PST
by
golux
To: NorthMountain
30
posted on
02/23/2016 7:06:53 AM PST
by
zeugma
(Lon Horiuchi is the true face of the feral government. Remember that. Always.)
To: IronJack
The fascination may have began with the frustrating fact that no one could find a formula that would predict the n
th prime given knowledge of some or all of the (n-1)st primes preceding it. Seems simple enough, but even to this day nobody has been able to do it. See my comments
here and
here for other reasons, which is by no means an exhaustive list. You could easily spend your whole life studying prime numbers.
To: LibWhacker
Awesome - I’ll make this my number my next password at work.
To: 2 Kool 2 Be 4-Gotten
Not good enough. Your password must include at least one special character, one lower case letter and one upper case letter. ;-)
To: LibWhacker
All you need to know is that it’s not divisible by 2, 3, 5, or 7. That shouldn’t be that hard.
34
posted on
02/23/2016 10:57:40 AM PST
by
IronJack
To: zeugma
Never had I thought to check, but my SS# is prime. Are there many 9 digit prime #s?
35
posted on
02/23/2016 11:06:17 AM PST
by
Slicksadick
(We accept the love we think we deserve.)
To: LibWhacker
22 million digits is still small by cryptography standards.
It isn’t the logic behind a prime that is the hard part. Advanced logic must be created to shortcut the processing needed to find the prime. These numbers cannot be calculated directly and must be processed in chunks. That processing takes a looong time. So, the advanced math is about finding the next prime using math instead of processing.
36
posted on
02/23/2016 11:16:02 AM PST
by
CodeToad
(Islam should be banned and treated as a criminal enterprise!)
To: IronJack
Lol, 121 is not divisible by 2, 3, 5 or 7. But it’s not prime.
To: Slicksadick
To: Slicksadick
Oops, I take that back. It’s about 405 million.
To: LibWhacker
Lol! Yeah, I missed that whole concept. 121 is the square of 11, which is a prime itself. I think my rule only applies to numbers less than 100.
40
posted on
02/23/2016 11:45:12 AM PST
by
IronJack
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