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Perhaps because they are next to each other, like 17 and 19, or 11 and 13. A Prime number is always an odd number, so not counting the even number between them they are adjacent.
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Why are 3 and 5 twin primes?
Because the definition of twin primes is: two prime numbers with a difference of 2. 3 and 5 are both prime numbers, and their difference is 5 - 3 = 2 → they are twin primes.
Is 71 and 73 twin primes?
twin primes are 2 prime numbers with a difference of 2 the prime numbers 5 and 3 are twin primes because 5 minus 3 equals 2 so 109 and 111 are not twin primes
What is a pair of twin prime?
A twin prime pair are two primes separated by 2. For example, 3 and 5 are twin primes. It is conjectured that there are an infinite number of twin primes.
Is 21and 23 twin prime numbers?
No, 21 and 23 are not twin prime numbers. Twin primes are pairs of prime numbers that differ by 2, such as 3 and 5, or 11 and 13.
Write a java programme to check whether the number is twin prime or not?
Find a prime number, add 2 to the number. Check if the new number is prime. IE : 3 is prime. 3+2 =5. 5 is prime. (3,5) are twin primes.
