1st semiprime is 4

1st semiprime is 4.

4 is 1st semiprime.

Learn more about Semiprimes.

Neighbours#

4₂

6₂

9₂

Compare with#

4₂

6₂

9₂

Learn more about Semiprimes
Check first 10 semiprimes
Check semiprimes up to 100
Check all semiprimes

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