isprime | R Documentation |
Array elements that are prime numbers.
isprime(x)
x |
numeric vector or matrix containing nonnegative integer values |
Returns an array (or vector) the same size as x
containing logical
1 (true
) for the elements of x
which are prime, and logical
0 (false
) otherwise.
H. Borchers hwborchers@googlemail.com, P. Roebuck proebuck1701@gmail.com
factors
,
primes
x <- c(2, 3, 0, 6, 10)
ans <- isprime(x) ## 1, 1, 0, 0, 0
as.logical(ans) ## true, true, false, false, false
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