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Working with a 12 digit number?
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Topic: Working with a 12 digit number? (Read 2288 times)
nobodyknowsme
Full Member
Posts: 114
Working with a 12 digit number?
«
on:
February 03, 2015, 09:30:25 pm »
SoI want to find the prime factors of a number. It all works apart from the fact that I can't enter a number 12 digits long. Any ideas on how I would do this?
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rvk
Hero Member
Posts: 6163
Re: Working with a 12 digit number?
«
Reply #1 on:
February 03, 2015, 09:34:01 pm »
The maximum of an INT64 is 9,223,372,036,854,775,807. (19 numbers) Wouldn't that be enough?
How are you inputting these values?
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nobodyknowsme
Full Member
Posts: 114
Re: Working with a 12 digit number?
«
Reply #2 on:
February 03, 2015, 09:37:00 pm »
I tried Int64 and it would'nt work. Don;t think my program could handle it.
Logged
rvk
Hero Member
Posts: 6163
Re: Working with a 12 digit number?
«
Reply #3 on:
February 03, 2015, 09:40:05 pm »
That's why I asked how you where inputting these numbers.
Int64 works perfectly for these high numbers.
(inputting 123456789012345 gives 123456789012345 back)
Code:
[Select]
program Project1;
var
i: int64;
begin
readln(i);
writeln(i);
readln;
end.
So I guess you need to change your program to handle int64 correctly.
Logged
nobodyknowsme
Full Member
Posts: 114
Re: Working with a 12 digit number?
«
Reply #4 on:
February 03, 2015, 09:59:44 pm »
Oh yeah, thank you very much. I now have the prime factors of 600851475143 lol
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Working with a 12 digit number?
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