Wednesday, November 2, 2011

643

643 is a prime number.

641 and 643 form a twin prime pair.

643 is the largest prime factor of 123456: 643(643) = 123456.

643 = (38 + 83)/(3 + 8).

A record 643 millimeters of rain fell in Sydney, Australia, in the month of June 1950.

No comments: