HP50g or other: U. of Houston calc exams

[Gilles]

(08-08-2015 10:19 PM)Hlib Wrote:  9. Give the sum of the prime factors (including repetition) for 224551579230.

224551579230 FACTORS /access LS 1 F6, press RS ▼ to see full menu list /
DROP *
UNROT * + ..... UNROT * + ..... till we will get the answer 301
A little clumsily.

Hi, I proceeded also with FACTORS (and not FACTOR) like this :

FACTORS
here, you can see there is only one repetition (3), so edit the list (down arrow) and delete repetition and just change 3 with a 6 ENTER and SigmaLIST