The only option is 2 and 3. Other than that, the difference between any two prime numbers is at least 2; there are a large number of so-called "twin primes" which are two apart, such as 11 and 13; or 107 and 109.
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2, 3Those two are consecutive, natural and prime numbers! It's as easy as one, two, three! (Pun intended)
Prime number next to any prime number is called consecutive prime number. Eg:- 2,3,5,7 are prime numbers
There are only two prime numbers that are consecutive numbers, 2 and 3. Their product is 2 x 3 = 6. The first prime numbers are 2, 3, 5, and 7 and the only two consecutive prime numbers whose product is a single digit are 2 and 3. (The next two consecutive prime numbers, 3 and 5, have a two-digit product.)
The first two consecutive prime numbers that have a difference of 20 are the numbers 887 and 907.
2 and 3