The Silicon Graphics Teaching Laboratory has been replaced by the Chemi
cal Information Laboratory and this information is for historical interest only
Power of Prime input and output
Numbers to be read in powerofprime form must be written as
sign [prime[^exp]] ... [[.] n![^exp]] ...
The sign factor must be present, but all remaining elements of this expression
are optional, as indicated by the square brackets (which should not themselves
appear). Each element represents a factor in the required number; that is,
the elements are multiplied together to arrive at the result. Numbers output
in powerofprime form appear in the same format. Examples are given below.
 sign
 is either 0 (denoting a zero value) or +, (+)1, (+)i, (1), or i. The sign
term of a positive number may not be omitted.
 prime^exp
 represents a factor comprising the specified prime number prime raised to the power exp. E.g. 5^2 represents the factor 25. The exponent may be omitted if it is
1.
 n!^exp
 is read as n factorial raised to the exponent given. The exponent may be omitted if
it is 1.
Prime and factorial terms may occur in any order and may be interspersed
with each other. Neither may contain embedded blanks, but they are separated
by blanks or period, `.'.The ^ introducing an exponent may be omitted if
the first character of the exponent is + or . Exponents have the form []nnn..[/2].
Examples:
+ 2^1/2 . 3^1/2 . 5+1/2 . 71/2 . 4!
would be read as 24 sqrt(15/14).
