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-   -   Whats a p7? (https://www.mersenneforum.org/showthread.php?t=26560)

MattcAnderson 2021-03-04 02:48

Whats a p7?
 
it is a seven digit prime number

for example 4002499

another is 828611

Cheers

Matt

Uncwilly 2021-03-04 03:11

Context makes a difference:
Automotive: [url]https://www.thedrive.com/new-cars/36030/xpeng-motors-p7-review-driving-the-chinese-tesla-fighter-behind-a-1-5-billion-new-york-ipo[/url]
Airplane: [url]https://en.wikipedia.org/wiki/Lockheed_P-7[/url]
CPUs: [url]https://en.wikipedia.org/wiki/List_of_Intel_CPU_microarchitectures#:~:text=P7[/url]

CRGreathouse 2021-03-04 03:14

[QUOTE=MattcAnderson;572960]it is a seven digit prime number

for example 4002499

another is 828611[/QUOTE]

There are [TEX]\pi(10^7) - \pi(10^6) = 586,081[/TEX] in total.

retina 2021-03-04 03:21

P7: proper prior planning prevents piss poor performance

Thanks go to [url=https://en.wikipedia.org/wiki/P7]WP[/url] for that one. And unsurprisingly it doesn't list the subject of this thread.

Batalov 2021-03-04 06:58

[QUOTE=MattcAnderson;572960]another is 828611
[/QUOTE]
Ah, found your problem. Counting is hard!
:barbie:

MattcAnderson 2021-03-04 06:59

Hi all,

Thank you specifically for the last 3 replies. They really put a smile on my face.

Cheers
Matt

retina 2021-03-04 09:45

A small and easy little quiz for MattcAnderson.

Is there always a prime Pn for every n>0?

R. Gerbicz 2021-03-04 18:03

[QUOTE=MattcAnderson;572960]it is a seven digit prime number
for example 4002499
another is 828611[/QUOTE]

Destroyed?
[CODE]
rate=0.1;year=21;(1+rate)^year
rate=0.03;year=3;(1-(1+rate)^(-year))/rate

answer:
%1 = 7.4002499442581601012110000000000000000
%2 = 2.8286113548946809221333416306177114687
[/CODE]

look the fractional part(!)

(for the 2nd formula we also have a financial tale)

Big coincidence?

ZFR 2021-03-05 22:13

[QUOTE=Batalov;572971]Ah, found your problem. Counting is hard!
[/QUOTE]

There are 3 types of people: those who can count and those who can't.

Uncwilly 2021-03-05 22:27

[QUOTE=ZFR;573073]There are 3 types of people: those who can count and those who can't.[/QUOTE]
There are [FONT="Lucida Sans Unicode"]10[/FONT] types of people:
Those that can infer from incomplete data,

kriesel 2021-03-05 23:33

[QUOTE=MattcAnderson;572960]it is a seven digit prime number
...
another is 828611[/QUOTE]828611 = 7 × 118373 = 7 x p6 = c6
2828611 and 3828611 are p7's.


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