No.
The GCF of 86 and 154 is 2. 86=2x43 154 = 2x7x11 Now the GCF is 2 since 43 does not occur in the prime factorization of 154 and 7 and 11 do not appear in the prime factorization of 86.
Eleven numbers less than 105 are relatively prime to 105. They are 82, 83, 86, 88, 89, 92, 94, 97, 101, 103, and 104.
They seem to mean that 97 is a prime number whereas the rest of them are composite numbers.
86 is not a prime number, so is a composite.
11 is the smallest 2-digit prime number and 97 is the greatest 2 digit prime number, so their difference is 86
86 and 154 are not relatively prime because they are both even numbers. Relatively prime numbers have no common factors other than 1, and all even numbers have 2 as a common factor.
The GCF of 86 and 154 is 2. 86=2x43 154 = 2x7x11 Now the GCF is 2 since 43 does not occur in the prime factorization of 154 and 7 and 11 do not appear in the prime factorization of 86.
2
The prime numbers less then 86 are; 2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79 and 83.
4
86 is not prime, no even numbers except 2 are prime.
Eleven numbers less than 105 are relatively prime to 105. They are 82, 83, 86, 88, 89, 92, 94, 97, 101, 103, and 104.
Prime Factorization of 86The prime factorization of 86 is:2 X 43Both numbers are prime, so that is the prime factorization of 86.
2 x 43 = 86 2 x 7 x 11 = 154 The GCF is 2.
'86' is an /EVEN number, so it will divide by '2' . 86 / 2 = 43 However, both '2' and '43' are prime numbers. NB With the exception of '2', all prime numbers are ODD numbers. However, NOT all odd numbers are prime numbers. NNB Even numbers end in 0,2,4,6,8 e.g. 1,234,678 is even Odd numbers end in 1,3,5,7,9. e.g. 1,234,587. is odd
86
They are 2 and 43