perplexus.info :: Numbers : Quick factors II

Home > Numbers

Quick factors II (Posted on 2019-06-23)

Given that 13⁴-6⁵+5⁹ is the product of exactly 5 distinct prime factors, what is the largest?

No Solution Yet Submitted by Danish Ahmed Khan

No Rating

Comments: ( Back to comment list | You must be logged in to post comments.)

Quickly

| Comment 1 of 2

the number in decimal is 1973910 which is clearly divisible by 2*3*5 giving 2*3*5*65797. So se must be looking at a semiprime. Fortunately, one of the prime factors is relatively small: 19.

This makes finding the largest easy: 3463.

Posted by Jer on 2019-06-23 20:02:56

Please log in:

Login:
Password:
Remember me:

Sign up! \| Forgot password

Search:

Search body:

Forums (1)
Newest Problems
Random Problem
FAQ | About This Site
Site Statistics
New Comments (16)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Chatterbox:


perplexus dot info