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Discover LudwigThe phrase "about a factor" is correct and usable in written English.
It can be used when discussing a specific aspect or element that influences a situation or outcome.
Example: "The study revealed that the participants' performance improved by about a factor of two when given additional training."
Alternatives: "by a factor" or "regarding a factor".
Exact(59)
grows by about a factor of three as the mass doubles.
As of this writing, the scanner has exceeded its $50,000 goal by about a factor of three, and with more than two weeks left to go.
It is found that the theoretical results are larger than the experimental ones by about a factor of ten.
We estimate that the velocity-magnitude perpendicular to B has also grown by about a factor of two.
The Recording Industry Association of Japan had pushed for the move, suggesting that illegal media downloads outnumbered legal ones by about a factor of 10.
SCA1B RL02 contains systematically higher noise of about a factor 3 4.
The related savings were about a factor of 9 the energy cost for air-conditioning.
For the graded media the switching field distribution is reduced by about a factor of two.
The orange line shows a ~60% improvement/year or about a factor of 10 in 5 years.
For best results, this initial guess should be within about a factor of three of the actual source size.
The number of clusters several billion years ago is about a factor of 10 too small, the calculations show.
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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com