## The DM42 is not able to calculate 42.. ;-)

Discussion around the Swiss Micros DM42 calculator.
DA74254
Posts: 67
Joined: Tue Oct 03, 2017 9:20 pm
Location: Norway/Latvia

### The DM42 is not able to calculate 42.. ;-)

Now that the "Numberphile" YT channel has revealed the answer to the life, the universe and everything:
I had to check it with my DM42. Well, it cannot calculate it's own self
Esben
DM42 SN: 00245

Dani R.
Posts: 285
Joined: Fri May 05, 2017 8:23 pm

### Re: The DM42 is not able to calculate 42.. ;-)

WP43 can calculate 42
DM42 SN:00032

Over_score
Posts: 83
Joined: Fri May 05, 2017 7:37 pm
Location: France

### Re: The DM42 is not able to calculate 42.. ;-)

Dani R. wrote:
Wed Sep 11, 2019 9:26 am
WP43 can calculate 42
Yes WP43S can!

But DM42 can calculate 43 12^3 + 8^3 + (-13)^3
DM42 (SN 00284 & 03835), DM15L, HP41CV, HP42S, HP35s, WP34S, HP Prime

Dani R.
Posts: 285
Joined: Fri May 05, 2017 8:23 pm

### Re: The DM42 is not able to calculate 42.. ;-)

Over_score wrote:
Wed Sep 11, 2019 10:39 am
But DM42 can calculate 43 12^3 + 8^3 + (-13)^3
DM42 SN:00032

Dani R.
Posts: 285
Joined: Fri May 05, 2017 8:23 pm

### Re: The DM42 is not able to calculate 42.. ;-)

Over_score wrote:
Wed Sep 11, 2019 10:39 am
But DM42 can calculate 43 12^3 + 8^3 + (-13)^3
You can simplify the example for the testSuite for 43 (2^3 + 2^3 + 3^3), but I think for 41 there is no solution.
DM42 SN:00032

Over_score
Posts: 83
Joined: Fri May 05, 2017 7:37 pm
Location: France

### Re: The DM42 is not able to calculate 42.. ;-)

Dani R. wrote:
Thu Sep 12, 2019 7:50 am
but I think for 41 there is no solution.
It seems proven that there is no solution for 41
https://en.wikipedia.org/wiki/Sums_of_three_cubes
DM42 (SN 00284 & 03835), DM15L, HP41CV, HP42S, HP35s, WP34S, HP Prime

Jaymos
Posts: 568
Joined: Sun Nov 04, 2018 6:03 pm
Location: Cape Town

### Re: The DM42 is not able to calculate 42.. ;-)

WP43* does also work the new non-trivial solution for 3 as well...

https://www.newscientist.com/article/22 ... z60nLxjc2X

WP43C shown:

Jaco Mostert
Elec Eng, South Africa
WP34C, HP42S, DM42 for complex math; 35S, 28C, 32Sii, WP34S, EL-506P, EL-W506, PB700; owned FX702P & 11C; used 67 & 85. iOS: 42s (Byron), Free42, WP31S/34S, HCalc.
WP43C running on DM42 sn. 03818 .

gomefun2
Posts: 28
Joined: Sun May 06, 2018 1:45 am

### Re: The DM42 is not able to calculate 42.. ;-)

It's probably possible to calculate this on the dm42 you'd just have to write an arbitrary precision program, then calculate it.

Assuming the problem is related to precision.

Walter
Posts: 1466
Joined: Tue May 02, 2017 9:13 am
Location: Close to FRA, Germany

### Re: The DM42 is not able to calculate 42.. ;-)

gomefun2 wrote:
Wed Feb 05, 2020 8:43 am
It's probably possible to calculate this on the dm42 you'd just have to write an arbitrary precision program, then calculate it.

Assuming the problem is related to precision.
Yes, it is related to precision. WP43S allows for integers with 1000 digits.
DM42 SN: 00041 Beta
WP 43S running on this device

HP-35, HP-45, ..., HP-50, WP 34S, WP 31S, DM16L

mezoganet
Posts: 124
Joined: Tue Jan 22, 2019 12:54 pm
Location: Tours, France

### Re: The DM42 is not able to calculate 42.. ;-)

Jaymos wrote:
Sun Sep 29, 2019 9:30 am
WP43* does also work the new non-trivial solution for 3 as well...

https://www.newscientist.com/article/22 ... z60nLxjc2X

WP43C shown:
Jaymos,

How can we transform a DM42 in a WP43 ?
HP33E, HP34C, HP41C, HP16C, HP28S, HP42S, HP48S, HP12C, HP35S, DM42, DM41L, DM15L, DM41X (SN#15) and HP3000 @ work during 18 yrs as IT Mgr