Storing bernoulli number is giving overflow error in python even after using decimal module

Question

I'm trying to store first 1000 bernoulli numbers in a dictionary in python. At first I just stored the numbers as it is. So I got an overflow error. Now after going through previous answers I thought of using decimal module.

So here it is

-5218507479961513801890596392421261361036935624312258325065379143295948300812040703848766095836974598734762472300638625802884257082786883956679824964010841565051175167717451747328911935282639583972372470105587187736495055501208701522099921363239317373617854217050435670713936357978555246779460902210809009009539232173 / 2291190

The 260th bernouli number. I was able to store all the previous ones in the dictionary.

This is the sample code I've written.

from decimal import *
d = Decimal
getcontext().prec = 10000
di = {260: d(-5218507479961513801890596392421261361036935624312258325065379143295948300812040703848766095836974598734762472300638625802884257082786883956679824964010841565051175167717451747328911935282639583972372470105587187736495055501208701522099921363239317373617854217050435670713936357978555246779460902210809009009539232173 / 2291190)}

This is the error snap shot

Is there any better way to handle such huge numbers ? Please tell me if there is some thing that can be done to store these numbers.

Answer 1

You should convert the large number to Decimal before doing the division, i.e.:

(Note the end of brackets)

di = {260: d(-5218507479961513801890596392421261361036935624312258325065379143295948300812040703848766095836974598734762472300638625802884257082786883956679824964010841565051175167717451747328911935282639583972372470105587187736495055501208701522099921363239317373617854217050435670713936357978555246779460902210809009009539232173) / 2291190}