... you have tested the overclocking limits of all your CPUs so carefully that if one of the clock speeds is increased by 1 Hz, the CPU burns.

[quote=edorajh;78382]... you start dancing and screaming when you find out that your new phone number is prime.[/quote]
If after reading this, you check if your phone number is prime and start dancing and screaming. (:banana:mine is! :banana:)

... your neighbors are perplexed by all the boiled helium rising above the building where you keep your farm.

... you have rewritten Prime95 to get rid of all options, including the save dumps, to make the program run quicker.

Willem

... whenever you upgrade your farm, a major traffic jam occurs near your home caused by a vast number of delivery trucks trying to reach it simultaneously.

[QUOTE=edorajh;79501]... you make a post in a thread just because it will be a prime number post in thread

(guilty - this is post #541 in this thread, and 541 is a prime!)[/QUOTE]

You hate the moderator, because he has deleted some older postings, and thus your posting # is no longer prime.

There is something very special about the following mersenne primes:

2^5-1 (3rd Mersenne Prime- 2 digits)
2^7-1 (4th Mersenne Prime- 3 digits)
2^61-1 (9th Mersenne Prime- 19 digits)
2^521-1 (13th Mersenne Prime- 157 digits)
2^9689-1 (21st Mersenne Prime- 2,917 digits)

These primes also have a prime number of digits!!!


There is also something special about these mersenne primes as well:

2^23,209-1 (26th Mersenne Prime- Discovered in 1979)
2^44,497-1 (27th Mersenne Prime- Discovered in 1979)
2^2,976,221-1 (36th Mersenne Prime- Discovered in 1997)
2^6,972,593-1 (38th Mersenne Prime- Discovered in 1999)
2^20,996,011-1 (40th Mersenne Prime- Discovered in 2003)

These primes were discovered in a year that is prime!!!
(Source: [url]http://www.isthe.com/chongo/tech/math/prime/mersenne.html[/url])


Unfortunately, there is no known mersenne prime that has a prime number of digits AND was discovered in a prime year. Not to mention that the last prime to have a prime number of digits was M21 in 1963. The next prime year is 2011, so lets find a prime then that also has a prime number of digits!

... you keep a record of which Mersenne primes have a prime number of digits and were discovered in a prime-numbered year. :grin:

[QUOTE=jinydu;87494]... you keep a record of which Mersenne primes have a prime number of digits and were discovered in a prime-numbered year. :grin:[/QUOTE]


That's RIGHT!

P.S. Hey jinydu, you forgot to mention that your post number is 547, and 547 is prime! lol.

You are sad because 2^31890823 - 1 is not prime :no:

241 divides my phone number :furious: