That's an infinite list. 76 and 78 are on it.
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There are infinitely many such number. Any number whose prime factors do not include 7 or 11 (or both) will be relatively prime.
Find the prime factors, in this case, of 77. Then multiply together ANY prime numbers that don't include those prime factors. You can use the same prime factor more than once if you want.
There are 3 prime numbers between 64 and 77: 67 71 73.
A prime number is a number that is divisible only by 1 and itself; it has no other factors. A composite number is a number that is divisible by more than 2 numbers. The factors of 77 are 1, 7, 11, and 77. Therefore, 77 is a composite number.
The prime factors of 77 are 7 x 11.
No, just 67.
77 and 79 are two..