There are four pairs of twin primes between 2 and 35: (5,7) (11,13) (17,19) (29,31).
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No, twin primes are pairs of prime numbers that have only one number between them which is a composite number. For example, (3, 5) and (11, 13) are twin prime pairs with the composite number 4 and 12 respectively between them.
59, 61 71, 73
Twin primes are pairs of prime numbers that differ from each other by two. 29 and 31 are twin primes.
25 pairs, including the pair (2, 3).
They are called twin primes and there are thought to be infinitely many such pairs.