The non-prime numbers between 81 and 87 are 82, 84, 85, and 86.
82 is not prime because it is divisible by 2: 82 divided by 2 equals 41.
84 is not prime because it is divisible by 2: 84 divided by 2 equals 42.
85 is not prime because it is divisible by 5: 85 divided by 5 equals 17.
86 is not prime because it is divisible by 2: 86 divided by 2 equals 43.
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No they are not.
All prime numbers except for 2 are odd. The sum of any two odd numbers is even. Therefore, unless 85 is prime (it's not) or -2 is, (it's not) there aren't two prime numbers that will equal 87.
3*29
The prime numers between 50 and 100 are 51, 53, 59, 61, 67, 71, 73, 79, 83, 87, 89, 91, and 97.
No, just 67.