1. Sphenic numberIn number theory, a sphenic number 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 = 2 × 3 × 5 has exactly 3 prime factors, but is not sphenic. All sphenic numbers have exactly eight divisors.
Read “Sphenic number” on English Wikipedia
Read “楔数” on Japanese Wikipedia
Read “Sphenic number” on DBpedia
Read “Sphenic number” on English Wikipedia
Read “楔数” on Japanese Wikipedia
Read “Sphenic number” on DBpedia
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