90
They are: 27+29+31 = 87
-87/3 = -29 therefore -28 + -29 + -30 = -87
27, 29, 31
The numbers are 28, 29 and 30.
87
its 27 29 and 31
The factors of 87 are 1, 3, 29, and 87, so it is a composite number.
87,89,91.....87+89+91=267
Yes, 2 and 3 are consecutive prime numbers.
There is no such thing as "a consecutive number", so the answer must be "No".
87 is not a prime number because 87 is divisible by 3 and 29.