Answer: 3 Of course, as time passes, the smallest Erdős number that can still be achieved will necessarily increase, as mathematicians with low Erdős numbers die and become unavailable for collaboration.

Answer: Venus One day on Venus is equal to 116 days on Earth. That is equal to 2784 hours or 167040 minutes. The surface temperature of Venus is 462 °C which is equal to 863.6°F.

Answer: A perfect number. You might also think of a perfect number as a number that is half the sum of all of its positive divisors, including itself! This definition is at least 2300 years old as it appears in Euclid's "Elements".