A002997: Carmichael numbers

In Zseq: Integer Sequence Generator

Carmichael numbers

Description

Under OEIS A002997, a Carmichael number is a composite number n such that

b^{n-1} = 1 (mod n)

for all integers b which are relatively prime to n. First 6 Carmichael numbers are 561, 1105, 1729, 2465, 2821, 6601.

Usage

Carmichael(n, gmp = TRUE)

Arguments

n	the number of first n entries from the sequence.
gmp	a logical; TRUE to use large number representation, FALSE otherwise.

Value

a vector of length n containing first entries from the sequence.

Examples

## generate first 3 Carmichael numbers
print(Carmichael(3))

Zseq documentation built on Sept. 7, 2022, 5:06 p.m.