How many generations of cyanobacteria would there be in a million years if each bacterium lives for 24 hours?

Cyanobacteria can reproduce rapidly, typically doubling in population every 24 hours under optimal conditions. In one million years, there are approximately 365 million days. If each bacterium reproduces once every day, this would result in about 365 million generations of cyanobacteria over that time span, assuming continuous growth and no limiting factors.