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

Discussion around the Swiss Micros DM42 calculator.
DA74254
Posts: 79
Joined: Tue Oct 03, 2017 11:20 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: 305
Joined: Fri May 05, 2017 10:23 pm

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

WP43 can calculate 42
DM42 SN:00032
Over_score
Posts: 118
Joined: Fri May 05, 2017 9:37 pm
Location: France

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

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

But DM42 can calculate 43 12^3 + 8^3 + (-13)^3
DM42 SN00284 running free42 & SN03835 running WP43S, DM15L, HP41CV, HP42S, HP35s, WP34S, HP Prime
Dani R.
Posts: 305
Joined: Fri May 05, 2017 10:23 pm

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

Over_score wrote:
Wed Sep 11, 2019 12:39 pm
But DM42 can calculate 43 12^3 + 8^3 + (-13)^3
DM42 SN:00032
Dani R.
Posts: 305
Joined: Fri May 05, 2017 10:23 pm

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

Over_score wrote:
Wed Sep 11, 2019 12:39 pm
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: 118
Joined: Fri May 05, 2017 9:37 pm
Location: France

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

Dani R. wrote:
Thu Sep 12, 2019 9:50 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 SN00284 running free42 & SN03835 running WP43S, DM15L, HP41CV, HP42S, HP35s, WP34S, HP Prime
Jaymos
Posts: 694
Joined: Sun Nov 04, 2018 7:03 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
C43 (WP34C) on DM42 sn. 03818 & 06199 for complex math, HP42S; HP32Sii, WP34S&C, HP28C, HP35s, EL-506P, EL-W506, PB700; owned FX702P & 11C; used HP67 & HP85; iOS: 42s Byron, Free42, WP31S/34S, HCalc.
gomefun2
Posts: 32
Joined: Sun May 06, 2018 3:45 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: 1800
Joined: Tue May 02, 2017 11:13 am
Location: Close to FRA, Germany

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

gomefun2 wrote:
Wed Feb 05, 2020 9:43 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 β
WP 43S running on this device

HP-35, HP-45, ..., HP-35S, WP 34S, WP 31S, DM16L
mezoganet
Posts: 124
Joined: Tue Jan 22, 2019 1:54 pm
Location: Tours, France

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

Jaymos wrote:
Sun Sep 29, 2019 11:30 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