Question

What are twin-prime numbers? Write all pairs of twin-prime numbers between 20 and 60.​

Answer 1

Answer:

(29, 31), (41, 43)

If there is 1 or only 1 number between two prime it is called Twin-Prime no.

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Answer 2

• Answer:
• The first few twin prime pairs are: (3, 5), (5, 7), (11, 13), (17, 19), (29, 31), (41, 43), (59, 61), (71, 73), (101, 103), (107, 109), (137, 139), … OEIS: A077800. for some natural number n; that is, the number between the two primes is a multiple of 6.