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| 4 or more primes (Posted on 2019-01-03) |
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Find the smallest number n where n and n+1 are both
products of 4 or more primes.
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Submitted by Ady TZIDON
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Solution:
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(Hide)
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80=2*2*2*2*2*5 i.e. 5 primes
81=3*3*3*3. 4 primes |
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