The book is now available! 32423
(another Prime Pages' Curiosity)
Prime Curios!
Curios: Curios Search:

+ The sum of the first 32423 prime numbers is pandigital. No other palindromic number shares this property. [Honaker]

+ Squaring the palindromic prime 32423 (note Honaker's sum) gives the 10-digit integer 32423^2 = 1051250929, which consists of two 0's, two 1's, two 2's, two 5's, and two 9's (one each in ascending order gives the 2*2-digit prime 01259). It truncates on one side to the concatenation of 3 ninth-powers (1,0,512) and on the other to the palindrome 929. The reversal of 1051250929 is 9290521501, which is prime. [Post]

Prime Curios! © 2000-2018 (all rights reserved)