The formula for Maple's floating point number representation is
m x 10^ewhere m is between [1...10) and e is between minexp and maxexp. m is the mantissa size (the number of digits in the mantissa). 1 is always included in the mantissa, and 10 never is. minexp is the minimum exponent and maxexp is the maximum exponent.
First you'll want to bring up the applet by clicking on the button below.