Storing very small floats

We're trying to store small decimal numbers (in the region of e-300), is there a way to do this? There seems to be a hard limit on how low you can go before a number is rounded out to 0, as these statements show:
SELECT DUMP(6.4322131131214125e-130) FROM DUAL
Typ=2 Len=10: 128,7,44,23,14,12,32,22,42,26
SELECT DUMP(6.4322131131214125e-131) FROM DUAL
Typ=2 Len=1: 128
SELECT DUMP(6.4322131131214125e-132) FROM DUAL
Typ=2 Len=1: 128

You use the NUMBER datatype to store fixed or floating-point numbers. You can specify precision and scale. The maximum precision of a NUMBER value is 38. The magnitude range is 1.0E-130 to 9.99...9E125 (38 nines followed by 88 zeroes). Scale can range from -84 to 127.
Oracle can represent numbers with greater precision than most floating-point implementations because the internal format of Oracle numbers is decimal. This can cause a loss of precision when fetching into a FLOAT variable

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Attachments:
position.PNG ‏17 KB

Lets see if I can answer without having to write a book.
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Storing very small floats

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