I think you just answered your own question. 55 = 2 + 53 53 + 2 = 55 See?
2-55 is -53.
53
53
53 is already a prime number so its factors are 1 and 53. 53 does not go into 12 or 55. The only number that goes in all three is 1.
The prime numbers between 45 and 55 are 47 and 53.
55 is 53 higher than 2
55
53
The numbers 47 and 53 are prime.
53 and 55
53