a semiprime: a product of two prime numbers, namely 3 and 47. Since those prime factors are Gaussian primes, this means that 141 is a Blum integer.

There are 4 factors of 141, which are 1, 3, 47, 141. Here, 141 is the biggest factor. The Prime Factors and Pair Factors of 141 are 3 47 and (1, 141), (3, 47) respectively.