Greatest and Least Prime Factors

[franktaw at netscape.net]

A quick survey shows that Lpf is used in the OEIS about equally often 
for the least prime factor and for the greatest (i.e., largest) prime 
factor.  Gpf is often used instead for the greatest prime factor, and 
spf is sometimes used instead for the smallest prime factor.

What should the standard names be for these functions?  Is there a 
standard in the mathematical literature?

My own vote would be for Lpf for least and Gpf for greatest.

Franklin T. Adams-Watters

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