The book is now available! 65531...81761 (25-digits)
(just those submitted by Carmichael)
Prime Curios!
Curios: Curios Search:
 

Participate:
Share
                                                 65531 3092675200 6031481761

Just showing those entries submitted by 'Carmichael': (Click here to show all)

+ The smallest Carmichael Number with fifteen prime factors: 6553130926752006031481761 = 11 x 13 x 17 x 19 x 29 x 31 x 41 x 43 x 61 x 71 x 73 x 109 x 113 x 127 x 181. Note that the sum of prime factors is a palindromic semiprime which is the product of two palindromic primes: 11+13+17+19+29+31+41+43+61+71+73+109+113+127+181 = 939 = 3 x 313. [Carmichael]




Prime Curios! © 2000-2017 (all rights reserved)