The phrase "a prime driver of" is correct and usable in written English.
It can be used to indicate a significant factor or influence behind a particular outcome or situation.
Example: "Innovation is a prime driver of economic growth in the technology sector."
Alternatives: "a key factor in" or "a major contributor to".
Housing prices have become a prime driver of inequality.
It's time the City was recognised as a prime driver of inflation.
A corruption scandal in 2005 toppled Shanghai's powerful party boss, Chen Liangyu, a prime driver of the Expo.
Analysis shows that below-market financing is a prime driver of the rapid rise in higher education prices.
In the BBC Trust's consultation Ukip was raised as a prime driver of the re-evaluation of criteria.
"Concurrent relationships" -- in which men and women have several sexual partners over the years, but infrequently -- are considered a prime driver of the epidemic in southern Africa.
This could be a prime driver behind the increase of the iPhone 7 Plus' memory to 3GB.
Global warming is almost surely contributing to drought and heat in ways that exacerbate fire risk, but the prime driver of losses in these recent fires is a heavily subsidized burst of development in zones of implicit fire danger.
As in previous studies, greater negative symptomatology predicted lower assessor-rated QoL [ 5, 6, 8, 11- 139 39, 40, 55] but not patient-rated QoL, suggesting that to a clinician, or assessor, extent of negative symptomatology is seen as the prime driver of quality of life.
The inter-governmental Council of Ministers and European Council now the EU's prime driver of policy thus represented the people.
For developed economies like Europe and the United States, innovation is the prime driver of growth and long-term job creation.
