Question: problem with accuracy

hello to every body

i am using maple. i want to find the number of BesselI(0,31.7). the accurate number is 4.1615582165614 e20 but maple gives me: 4.161558217 10^20 . i think it gives me very inaccurrate number. because i want very accurate numbers. is there any option to give me the accurate number? another example: besseli(0,60) with(MTM) double=5.89407705600000006 e24 when accurate is 5.894077055609803 e24. plz hel me.

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