31

This number is a prime.

Single Curio View:   (Seek other curios for this number)
The first U.S. space satellite (Explorer-I) weighed just less than 31 pounds and was launched on Jan 31, 1958. The high-power transmitter worked for 31 days. [McCranie]

Submitted: 2002-04-11 15:22:55;   Last Modified: 2008-03-28 13:22:46.
Printed from the PrimePages <primes.utm.edu> © G. L. Honaker and Chris K. Caldwell