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prime numbers
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tohellandback
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sum of two prime numbers is a prime numbers.
so one of the prime numbers must be 2.
other we will need to check and I don't think there is any limit
2+3=5 prime
2+5=7
2+11=13
2+17=19
2+29=31
2+41=43
2+59=61
..
and I am sure there are a lot more
so one of the prime numbers must be 2.
other we will need to check and I don't think there is any limit
2+3=5 prime
2+5=7
2+11=13
2+17=19
2+29=31
2+41=43
2+59=61
..
and I am sure there are a lot more
The powers of two are bloody impolite!!
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tohellandback
- Legendary Member
- Posts: 752
- Joined: Sun May 17, 2009 11:04 pm
- Location: Tokyo
- Thanked: 81 times
- GMAT Score:680
if a is 2, then a raised to any power will be evendrnt wrote:thanks.missed out on typing half the q.
if a,b r two prime numbers then a raised to pwer b is evn,odd always?
in all other cases, a raised to b will be odd.
Let me put it like this
except 2, all prime numbers are odd. odd raised to any power is always odd.
2 raised to any power(not 0) will always be even
The powers of two are bloody impolite!!
