There are eight twin prime pairs less than 100 [(3, 5), (5, 7), (11, 13), (17, 19), (29, 31), (41, 43), (59, 61), and (71, 73)].
2 5 6
(2,3) and (2,5) are the two pairs such that the sum of their elements is a prime number.
There are 25 prime numbers less than 100
There are 46 prime numbers less than 200.
The prime numbers less then 86 are; 2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79 and 83.
Eight pairs.
One pair.
2 5 6
When their GCF is greater than 1. When they have prime factors in common.
(2,3) and (2,5) are the two pairs such that the sum of their elements is a prime number.
The prime numbers that are less than 14 are: 2,3,5,7,11,13.
There are 35 prime numbers less than 150.
There are 46 prime numbers less than 200.
There are 25 prime numbers less than 100
The prime numbers less then 86 are; 2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79 and 83.
There are no negative prime numbers.
There are 48 prime numbers less than 220.