The phrase "insignificant factor" means something that doesn't have much importance or doesn't really matter in a given situation.
Sentences with «insignificant factor»
Of course, not insignificant factors of money and ethnic voters also contributed to this change of heart. (theglobeandmail.com)
The only variable that changed from test to test was the client's marital status, and by adjusting that, the researchers found that this seemingly insignificant factor did play a role. (costulessdirect.com)
Pure Barre is proof that age is such an insignificant factor when it comes to fitness and the changes your body can see! (purebarre.com)