#### cube_rat

##### Thinks s/he gets paid by the post

- Joined
- Jul 12, 2005

- Messages
- 1,466

The RSA security foundation is built on prime numbers. We're using primes in our E commerce/banking security but really haven't cracked the code so to speak.

You are using an out of date browser. It may not display this or other websites correctly.

You should upgrade or use an alternative browser.

You should upgrade or use an alternative browser.

- Thread starter cube_rat
- Start date

- Joined
- Jul 12, 2005

- Messages
- 1,466

The RSA security foundation is built on prime numbers. We're using primes in our E commerce/banking security but really haven't cracked the code so to speak.

- Joined
- Jun 23, 2002

- Messages
- 1,841

The 18th - 29th digits of the true safe withdrawal rate is a very long prime! :

Chaos Theory is neat, though. I don't personally believe the obsession to find order is a constraint of human thinking. After all, we keep finding it! The thing is, since the big bang, the universe has gone from perfect order to more and more chaos, entropy continues to do it's work as the universe expands. Life is like a little, defiant shout against disorder, reversing entropy a tiny bit for just a blink of time. I think I heard somewhere that eventually matter and energy will dissapate over such a broad area that all the stars with snuff out and there won't be enough matter in any one place to form new ones. A Dark Universe, where only dust and low levels of infrared energy scuttle across an impossibly empty chasm of space. That would kind of suck. Maybe at some point the universe will contract again and we start the process all over?

- Joined
- Feb 27, 2006

- Messages
- 3,895

i've posted the following before. seems appropriate here...

a beginner's guide to constructing the universe

the mathematical archetypes of nature, art & science

a voyage from 1 to 10

by michael s. schneider

http://tinyurl.com/gh8kk

Depends. Is 36DD a prime number?

Depends. Is 36DD a prime number?

Don't know if it's a Prime Number but I'd say it bears immediate further investigation

- Joined
- Jun 1, 2005

- Messages
- 1,352

The brachistochrone problem was posed by Johann Bernoulli in Acta Eruditorum in June 1696. 36DD may be the answer to this problem.

And it contains 69 a fine number to go with 17.

OldAgePensioner said:Johann Bernoulli

Loved his removable disk drives.

- Joined
- Jun 1, 2005

- Messages
- 1,352

He also sells great dry pasta and some great Extra Virgin olive oil.

- Joined
- Jul 12, 2005

- Messages
- 1,466

For love of all things pure and holy, can we keep our mystical prime numbers out of the gutter??

- Joined
- Jun 1, 2005

- Messages
- 1,352

English translation of Euclid's actual proof.

Theorem.

There are more primes than found in any finite list of primes.

Proof.

Call the primes in our finite list p1, p2, ..., pr. Let P be any common multiple of these primes plus one (for example, P = p1p2...pr+1). Now P is either prime or it is not. If it is prime, then P is a prime that was not in our list. If P is not prime, then it is divisible by some prime, call it p. Notice p can not be any of p1, p2, ..., pr, otherwise p would divide 1, which is impossible. So this prime p is some prime that was not in our original list. Either way, the original list was incomplete.

- Joined
- Aug 22, 2005

- Messages
- 335

"No one shall expel us from the Paradise that Cantor has created."

Cute n Fuzzy Bunnay said:Depends. Is 36DD a prime number?

Assuming you're in hexadecimal, then when you convert 36DD to -- wait a minute, did I miss a joke or something?

- Replies
- 34

- Views
- 5K

- Replies
- 15

- Views
- 3K