All the prime numbers greater than 3 that are between 1-60 end in 1, 3, 5, or 7, are either one or two digits in length, and are odd numbers.
If you notice something, it is [most likely] a false impression. There is no known pattern to prime numbers.
All numbers greater than 2 are composites, not prime numbers.
To determine the number of prime numbers between 1 and 8888888888888888888888888888888888888888888888, we can use the Prime Number Theorem. This theorem states that the density of prime numbers around a large number n is approximately 1/ln(n). Therefore, the number of prime numbers between 1 and 8888888888888888888888888888888888888888888888 can be estimated by dividing ln(8888888888888888888888888888888888888888888888) by ln(2), which gives approximately 1.33 x 10^27 prime numbers.
The prime numbers between 40 and 50 are 41, 43, and 47.
There are 2 prime numbers between 25 and 35: 29 31.
There are 2 prime numbers between 80 and 90: 83 89
Any prime numbers greater than 2 will be odd numbers. The difference between two odd numbers will be an even number. So, the difference between two prime (and odd) numbers could be 2, 4, or 6, of the numbers given. The difference could not be 3, 5, or 7.
Any number greater than one can be co-prime.
There are infinitely many prime numbers which are greater than 30.
71, 73, and 79 are the only prime numbers between 70 and 80.
The prime numbers between 30 and 50 are 31, 37, 41, 43, and 47.
Look up a list of prime numbers (a Google search for "prime numbers" or "list of prime numbers" should do); every number (greater than 1) that is NOT a prime number is composite.