The book is now available! 9091
(another Prime Pages' Curiosity)
Prime Curios!

Valid HTML 4.01!

Curios: Curios Search:
 

Participate:
Share
GIMPS has discovered a new largest known prime number: 282589933-1 (24,862,048 digits)

+ A unique prime indeed. Reverse the order of its middle digits to form the next unique prime (9901).

+ The greatest prime factor of any 10-digit repdigit is 9091. [La Haye]

+ The smallest prime of the form 10k-10^(k-1).....+10^0, for k=4. [Silva]

+ 9091, 909091, 909090909090909091, and 909090909090909090909090909091 are each prime, and 9091 and 909091 are the two smallest prime factors of 9090909090909090909090909090909091. Submitted on 9/09/09. [Green]

+ The lesser in the only pair of primes, (9091, 9293), formed from four successive double-digit composite numbers, 90, 91, 92, 93. [Loungrides]

(There are 2 curios for this number that have not yet been approved by an editor.)

  To link to this page use /curios/page.php?number_id=600



Prime Curios! © 2000-2019 (all rights reserved)  privacy statement   (This page was generated in 0.0137 seconds.)