Any number greater than one can be co-prime. I guess the answer is 49.
One pair of twin primes between 135 and 145
There are 9592 primes.
(3, 5), (5, 7), (11, 13), (17, 19), (29, 31), (41, 43), (59, 61), (71, 73)...Many more are known. Search the Internet for "twin primes". It is not known whether there are infinitely many twin primes.
There are infinitely many primes. There are 24 prime numbers between 1 and 100
There are 731 pairs.
There are four pairs of twin primes between 2 and 35: (5,7) (11,13) (17,19) (29,31).
There are for pairs of co-primes between 1 and 25. They are (3, 5), (5, 7), (11, 13), and(17, 19).
it is infinite
301
25 pairs, including the pair (2, 3).
Any number greater than one can be co-prime. I guess the answer is 49.
17
There 4 pairs of primes that can give a sum 40 in addition. They are (3,37), (11,29), (17,23),(19,21).
The only consecutive primes between 1 and 100 are 2 and 3.
They are called twin primes and there are thought to be infinitely many such pairs.
There is only 1 pair of primes and they are 2*5.