Prime Factor - Casio Classwiz VS HP 12C
08-21-2017, 01:42 AM
Post: #1
 Gamo Senior Member Posts: 665 Joined: Dec 2016
Prime Factor - Casio Classwiz VS HP 12C
Prime Factorization on Casio CLASSWIZ emulator somehow gave result as prime for (191373191) whereas HP 12C prime factor program result 1237 x 15467

Gamo
08-21-2017, 02:10 AM
Post: #2
 Joe Horn Senior Member Posts: 1,721 Joined: Dec 2013
RE: Prime Factor - Casio Classwiz VS HP 12C
The manual for the Casio says that it cannot factor a value if "two or more of the prime factors of the value have more than three digits". The display will indicate when factoring is incomplete: "The part that cannot be factored will be enclosed in parentheses on the display."

Try factoring 1009^2. According to the manual, it should fail to factor.

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-Joe-
08-21-2017, 09:23 AM
Post: #3
 Gamo Senior Member Posts: 665 Joined: Dec 2016
RE: Prime Factor - Casio Classwiz VS HP 12C
Hello Joe Horn

Interesting to know that the maximum 3 digits prime for Casio Classwiz is it limit otherwise all other features is excellent.

Gamo
08-21-2017, 10:37 AM
Post: #4
 Dieter Senior Member Posts: 2,397 Joined: Dec 2013
RE: Prime Factor - Casio Classwiz VS HP 12C
(08-21-2017 01:42 AM)Gamo Wrote:  Prime Factorization on Casio CLASSWIZ emulator somehow gave result as prime for (191373191) whereas HP 12C prime factor program result 1237 x 15467

Both results are wrong. 191373191 is not prime, it is 12373 x 15467.
Which 12C program returns 1237 and 15467 as prime factors? Or was this just a typo?

Dieter
08-21-2017, 12:47 PM
Post: #5
 Don Shepherd Senior Member Posts: 737 Joined: Dec 2013
RE: Prime Factor - Casio Classwiz VS HP 12C
(08-21-2017 10:37 AM)Dieter Wrote:  Both results are wrong. 191373191 is not prime, it is 12373 x 15467.
Which 12C program returns 1237 and 15467 as prime factors? Or was this just a typo?

Dieter

He might have been referring to my program, 1237 is a typo.
08-21-2017, 02:23 PM
Post: #6
 Gamo Senior Member Posts: 665 Joined: Dec 2016
RE: Prime Factor - Casio Classwiz VS HP 12C
Sorry guys that was a typo
191373191 = 12373 and 15467

Gamo
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