<jupyter_start><jupyter_text>Extracting the SI prefix`ubermagutil` provides convenience methods for determining the prefix of a value, such as pico, micro, mega, etc. The prefixes are:<jupyter_code>import ubermagutil.units as uu

uu.si_prefixes<jupyter_output><empty_output><jupyter_text>From a single value, prefix can be extracted using `si_multiplier`:<jupyter_code>uu.si_multiplier(5e-12)
uu.si_multiplier(-3e6)<jupyter_output><empty_output><jupyter_text>Similarly, for a list of values, the largest prefix can be determined using `si_max_multiplier`:<jupyter_code>uu.si_max_multiplier([2e-3, 2e-6, 6e-9])<jupyter_output><empty_output>
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