👉 In mathematics, "proestrus" refers to a number that is not only an integer but also a prime number. This means it has exactly two distinct positive divisors: 1 and itself. For example, 28 is a proestrus because its only divisors are 1 and 28, while 37 is not a proestrus as its only divisors are 1 and 37. Proestruses are an important concept in number theory and have