2, 3, 5, 7, 11, 13, 17, 19, 23.
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To be relatively prime you must relate the number to another number. 125 is 5³ so it is relatively prime to all numbers that are not multiples of 5 (do not end in 0 or 5)
The difference when subtracting the prime number 2 from the prime number 127 is 125. No other two prime numbers added together or subtracted from each other have a sum or difference of 125. All primes except the number 2 are odd numbers, and two odd numbers added together or subtracted will always produce an even sum or difference.
The prime numbers between 43 and 53 are 47 and 53.
2,4,6,8,10,12,14,15,16,18,20,21
prime numbers between 12 and18: 13, & 17