C# - Greater decimal accuracy than Decimal type

Question

Is it possible to get more decimal precision than the decimal type in C#? According to MSDN, the decimal type can store up to 29 significant digits, however I am wondering if it possible to store more than that and how to go about doing so.

Thanks in advance.

possible duplicate of [Big numbers with fraction support](http://stackoverflow.com/questions/2533960/big-numbers-with-fraction-support) - Has useful links in the answers. — , Jul 25 '10 at 02:36

score 1 · Accepted Answer · answered Jul 25 '10 at 02:35

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Sure - you can come up with your own data type (or use an existing third party library - the J++ runtime has an implementation of BigDecimal usable from C#).

What do you need that for? It is VERY unusual to need more than 29 significant digits ;)

answered Jul 25 '10 at 02:35

TomTom

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This question is more theoretical then practical. Recently I was trying to write a program to write Pi to a certain number of decimal places and I realized that I could only store up to 29 decimal places. Thus this question was born. – Adam P Jul 25 '10 at 02:39
Yeah. Mathematical playing is pretty much the only real use ;) – TomTom Jul 25 '10 at 02:53

score 0 · Answer 2 · answered Aug 27 '13 at 07:49

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You could use BigRational class in BCL. However It's still in beta version ...

answered Aug 27 '13 at 07:49

SepehrM

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score 0 · Answer 3 · answered Jul 25 '10 at 05:40

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You can use a scaled BigInteger if you're using 4.0. That will make arithmetic easier.

answered Jul 25 '10 at 05:40

recursive

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C# - Greater decimal accuracy than Decimal type

3 Answers3