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Consecutive Primes (
Posted on 20050124
)
Show that the sum of two consecutive odd primes has at least 3 (not necessarily distinct) prime factors. For example,
3+5=2*2*2
5+7=2*2*3
7+11=2*3*3
See The Solution
Submitted by
David Shin
Rating:
3.1667
(6 votes)
Comments: (
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at least 3
 Comment 2 of 6 
1 is not a prime number
let 1st odd prime be 2*n1
then the 2nd 2*n+1
the sum is 4*n=2*2*n
q.e.d.
Posted by
Ady TZIDON
on 20050124 15:14:59
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