find the prime

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Sidharth
Posts: 20
Joined: Sat Feb 08, 2014 11:29 pm
Location: Naogaon,Bangladesh

find the prime

Unread post by Sidharth » Tue Feb 11, 2014 12:51 am

12345 can be written as sum of two primes.what are the primes?

Tahmid
Posts: 110
Joined: Wed Mar 20, 2013 10:50 pm

Re: find the prime

Unread post by Tahmid » Tue Feb 11, 2014 1:40 am

even+odd=odd
even+odd=12345
so,one of these two primes whose sum is 12345 must be even.
it is 2. and other prime is 12345-2=12343
so two primes are 2 and 12343 ........very cool :mrgreen:
Last edited by Tahmid on Tue Feb 11, 2014 11:50 am, edited 1 time in total.

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Raiyan Jamil
Posts: 138
Joined: Fri Mar 29, 2013 3:49 pm

Re: find the prime

Unread post by Raiyan Jamil » Tue Feb 11, 2014 10:21 am

#Tahmid
The ans is right . But there is only 1 problem , even + odd = odd . Not even . And 12345 is a odd number .
A smile is the best way to get through a tough situation, even if it's a fake smile.

Tahmid
Posts: 110
Joined: Wed Mar 20, 2013 10:50 pm

Re: find the prime

Unread post by Tahmid » Tue Feb 11, 2014 11:52 am

@jamil
....i'm sorry....it was just printing mistake :!: now it's ok.

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