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Prime or No Prime!
Posted: Thu Jul 23, 2009 7:09 am
by anonymus
Hi Guys, I thought i might as well start a new game here as well, it goes like this, i post a number and you guys say if its a prime or not. The one who gets it right posts a new number and we do our factorizations and say if its a prime or not and so on..
So lets get our prime on bitches!
I'll start easy to get it rolling; 61
EDIT; a prime number is a number not dividable by anything but itself or 1 to get a whole number..
Re: Prime or No Prime!
Posted: Thu Jul 23, 2009 7:09 am
by anonymus
61 is a prime!
Re: Prime or No Prime!
Posted: Thu Jul 23, 2009 7:12 am
by anonymus
anonymus wrote:61 is a prime!
thats correct anon 61 is a prime, so you get to choose a new one.. (to avoid multipost i will just post my new number in this one)
oh! thank you very much good sir, well my new number is;
751 but is it a prime?
Re: Prime or No Prime!
Posted: Thu Jul 23, 2009 12:16 pm
by BoganGod
Prime
Re: Prime or No Prime!
Posted: Thu Jul 23, 2009 12:37 pm
by anonymus
BoganGod wrote:Prime
that is correct Bogan 751 is a prime number. fee free to post a new number and we will see f its a prime or not
Re: Prime or No Prime!
Posted: Thu Jul 23, 2009 12:45 pm
by BoganGod
7
Re: Prime or No Prime!
Posted: Thu Jul 23, 2009 12:58 pm
by anonymus
7 is a prime
Re: Prime or No Prime!
Posted: Thu Jul 23, 2009 2:53 pm
by slaggan
RTFM anon
, your turn to post a new prime
Re: Prime or No Prime!
Posted: Thu Jul 23, 2009 4:02 pm
by -Maximus-
Here we go:
15485863
Re: Prime or No Prime!
Posted: Thu Jul 23, 2009 4:06 pm
by anonymus
-Maximus- wrote:Here we go:
15485863
bloody hell mate;) do you know how long it would take to factorise that number?
well it took about 3 seconds to google it and 15485863 is actually the 1000000th primenumber;)
cudos
but maybe we should limit it to the first 500 or 1000 primes, but hell you can google those as well.. i hate the internet
but yeah in short 15485863 is a prime
source;
http://primes.utm.edu/
Re: Prime or No Prime!
Posted: Thu Jul 23, 2009 4:11 pm
by anonymus
slaggan wrote:RTFM anon
, your turn to post a new prime
hold your horses you old slag i had to spend my last mone on some thai-food and didnt have the time..
but ok lets give thisone a go in the opposite style of previous poster;)
2
Re: Prime or No Prime!
Posted: Thu Jul 23, 2009 4:14 pm
by -Maximus-
lol, well heck, stupid google is cheating, I have a formula to calculate mine!
Re: Prime or No Prime!
Posted: Thu Jul 23, 2009 4:18 pm
by anonymus
-Maximus- wrote:lol, well heck, stupid google is cheating, I have a formula to calculate mine!
yeah its cheating allright, but i wasnt sitting down working my way up to the millionth prime
how does your formula look? not ereally a big math-guy even though i find it interesting..
Re: Prime or No Prime!
Posted: Thu Jul 23, 2009 4:20 pm
by -Maximus-
lol you should google prime number formulas, you will find plenty......i just knew that one from heart
Re: Prime or No Prime!
Posted: Thu Jul 23, 2009 4:34 pm
by anonymus
-Maximus- wrote:lol you should google prime number formulas, you will find plenty......i just knew that one from heart
ok, thing is they dont work in reverse though.. so finding out if the 1000000th prime is a prime or not is a lot of trial and error or am i wrong?
Re: Prime or No Prime!
Posted: Fri Jul 24, 2009 3:21 am
by MrPanzerGeneral
Yes.
I completely agree with you.
You are indeed wrong.
No trial and error involved.
5.
(coincidently: the # number of Village People still alive today )
Re: Prime or No Prime!
Posted: Fri Jul 24, 2009 6:12 am
by BoganGod
Working out prime numbers is pretty simple, so is the maths version of memorizing boring poetry by talentless long winded gits. Your other thread is more interesting anonymus.
Re: Prime or No Prime!
Posted: Sat Jul 25, 2009 2:17 am
by AceArtemis
5 is a prime.
New number: 1
Re: Prime or No Prime!
Posted: Sat Jul 25, 2009 7:11 am
by anonymus
AceArtemis wrote:5 is a prime.
New number: 1
incidently 1 is the number of village people mrpanzergeneral hasnt been shall we sayt "carnal" with!
Re: Prime or No Prime!
Posted: Fri Jul 31, 2009 10:07 pm
by Caymanmew
is this prime
-4358725873953871538715318797310
Re: Prime or No Prime!
Posted: Fri Jul 31, 2009 10:44 pm
by colton24
more than likely no how bout this one? 99
Re: Prime or No Prime!
Posted: Fri Jul 31, 2009 11:13 pm
by pancakemix
no
654321
Re: Prime or No Prime!
Posted: Sat Aug 01, 2009 1:52 am
by a.sub
AceArtemis wrote:5 is a prime.
New number: 1
1 is not prime as it has only 1 factor, a prime number is defined as having exactly 2
In mathematics, a prime number (or a prime) is a natural number which has exactly two distinct natural number divisors: 1 and itself. The first twenty-five prime numbers are:
2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97.[1]
An infinitude of prime numbers exists, as demonstrated by Euclid around 300 BC.[2] The number 1 is by definition not a prime number. The fundamental theorem of arithmetic establishes the central role of primes in number theory: any nonzero natural number n can be factored into primes, written as a product of primes or powers of primes. Moreover, this factorization is unique except for a possible reordering of the factors.
caymanmew wrote:is this prime
-4358725873953871538715318797310
ends in a 0, so no
pancakemix wrote:no
654321
the sum of the numbers is 21 which is divisible by 3, so no
my turn 9175319357135913751395139517359379