is.prime(n)
returns TRUE
if n
is a prime number,
and FALSE
otherwise.
primefactors(n)
factorises the integer n
into its prime number factors, and returns an integer vector
containing these factors. Some factors may be repeated.
divisors(n)
finds all the integers which divide
the integer n
, and returns them as a sorted vector of integers
(beginning with 1
and ending with n
).
relatively.prime(n, m)
returns TRUE
if the integers
n
and m
are relatively prime, that is, if they have no
common factors.
least.common.multiple
and greatest.common.divisor
return the least common multiple or greatest common divisor of two
integers n
and m
.
primesbelow(nmax)
returns an integer vector containing all the
prime numbers less than or equal to nmax
.