nextn
Highly Composite Numbers
Description
Finds the smallest integer at or above n whose factors
are in the given list of factors.
Usage
nextn(n, factors = c(2, 3, 5))
Arguments
| n |
a vector of positive integral numbers.
|
| factors |
a vector of integral numbers larger than 1 giving
the desired factors.
|
Value
returns a numeric vector the length of n.
For each n[i], it returns the smallest
number that is no smaller than n[i]
whose factors are entirely in the factors argument.
See Also
fft(x) is much faster when length(x) has
many prime factors than when it is prime and nextn can
give you a good length to which to expand x.
Examples
nextn(901)
nextn(c(12, 13), factors = c(2, 3))