Consecutive numbers implies integers. Rational or real numbers are infinitely dense so there is no "next" number.
There can be no pairs of integers such that their product is a fractional number between 559 and 560.
They are 1, 13, 43 and 559.
The product is 559.
Their product.
100+500=600
1, 2, 3 and 559 : added together, make 565.
559
559 * 438 = 244,842
1, 13, 43, 559
A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite. 559 is composite.
559 + 5590 = 6149
That equals 559. If you have to, estimate 210 + 350 = 560
You need at least two numbers to find a GCF. If that's 55 and 9, or 5 and 59, their GCFs are both 1.