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Summing or Multiplying (Posted on 2006-08-21)

123 is a peculiar integer, because 1+2+3=1*2*3. 1412 is also peculiar, since 1+4+1+2=1*4*1*2.

A simple question: are there infinitely many such numbers?

A not so simple question: if so, are there such numbers for ANY number of digits?

See The Solution Submitted by e.g.

Rating: 4.2500 (8 votes)

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re(4): Peculiars vs. Primes

| Comment 19 of 21 |

(In reply to re(3): Peculiars vs. Primes by Robby Goetschalckx)

"Probably there are more primes than peculiars" means "there are finitely many peculiars", so they are not both infinite -- and I guess that would be hard proving!

Posted by Old Original Oskar! on 2006-08-23 07:23:09

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