Answer
The laser beam is more intense by a factor of about 36.
Work Step by Step
Intensity is the power per unit area.
The relevant area for the laser light is the cross-sectional area of the beam.
$$I=\frac{P}{\pi r^2}=\frac{0.00050W}{\pi (0.0015m)^2}\approx 71W/m^2$$
The area for the lightbulb is the surface area of a sphere over which the power is distributed.
$$I=\frac{P}{4\pi r^2}=\frac{100W}{4\pi (2.0m)^2}\approx 2.0W/m^2$$
The laser beam is more intense by a factor of (70.74/1.989), or about 36
