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4 or more primes (Posted on 2019-01-03)

Find the smallest number n where n and n+1 are both
products of 4 or more primes.

See The Solution Submitted by Ady TZIDON

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one answer

| Comment 1 of 3

80 = 2^4 * 5 = 5 primes

81 = 3^4 = 4 primes

If no dupes are allowed I have no idea.

Posted by xdog on 2019-01-03 10:07:48

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