589
This number is a composite.
The smallest 3-digit brilliant number, (589 = 19 × 31), whose the prime factors concatenated in order and reverse order create primes, i.e., 1931, 3119. [Loungrides]
The smallest Golden semiprime that can be expressed as the
sum of 7 consecutive Fibonacci numbers, i.e., (13 + 21 + 34
+ 55 + 89 + 144 + 233). [Bajpai]
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell