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2019-04-16, 10:23
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#1 |
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Mar 2018
21216 Posts |
Number 99919
99919 is what a friend of mine has called super-brilliant number.
In fact, it has two prime factors of three digits each and sumdigits of the prime factors is the same 99919=163*613 two prime factors each with 3 digits, the sum of the digits of 163 is 10 and the sum of the digits of 613 is 10. Is this the only number composed by two prime factors which is super-brilliant and the prime factors of it are a permutation of the digits of the other? In fact 613 is a permutation of the digits of 163... Can you find other examples with two prime factors? |
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2019-04-16, 14:19
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#2 |
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1976 Toyota Corona years forever!
"Wayne"
Nov 2006
Saskatchewan, Canada
467610 Posts |
Can't you make as many as you want by picking the prime factors first?
137x317= 43429 and many more. |
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