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598 = 2 × 13 × 23 = 51 + 92 + 83, sphenic number
In number theory, a sphenic number (from Ancient Greek: σφήνα — wedge) is a positive integer which is the product of three distinct prime numbers.
Note that this definition is more stringent than simply requiring the integer to have exactly three prime factors; e.g. 60 = 22 × 3 × 5 has exactly 3 prime factors, but is not sphenic.
All sphenic numbers have exactly eight divisors. If we express the sphenic number as , where p, q, and r are distinct primes, then the set of divisors of n will be:
598 = 2 × 13 × 23 = 51 + 92 + 83, sphenic number
In number theory, a sphenic number (from Ancient Greek: σφήνα — wedge) is a positive integer which is the product of three distinct prime numbers.
Note that this definition is more stringent than simply requiring the integer to have exactly three prime factors; e.g. 60 = 22 × 3 × 5 has exactly 3 prime factors, but is not sphenic.
All sphenic numbers have exactly eight divisors. If we express the sphenic number as , where p, q, and r are distinct primes, then the set of divisors of n will be:
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