In number theory, a sphenic number (from Ancient Greek: σφήν, 'wedge') is a positive integer that is the product of three distinct prime numbers. For example, since 2, 3, and 73 are all prime, 438 is a sphenic number because 2 × 3 × 73 = 438.
In number theory, a sphenic number (from Ancient Greek: σφήν, 'wedge') is a positive integer that is the product of three distinct prime numbers. For example, since 2, 3, and 73 are all prime, 438 is a sphenic number because 2 × 3 × 73 = 438.
Source: Wikipedia "Sphenic number" · CC BY-SA 4.0
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