Sublime number

In mathematics, a sublime number is a positive integer which has a perfect number of positive divisors (including itself), and whose positive divisors add up to another perfect number.

12 for example is sublime number, because it has a perfect number of positive divisors (6):1, 2, 3, 4, 6, and 12, and the sum of these is again perfect number: 28.

There are only two know sublime numbers, 12 and 6086555670238378989670371734243169622657830773351885970528324860512791691264.^{[citation needed]}