77

This number is a composite.

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There are 77 minimal non-single-digit primes, i.e., primes with greater than or equal to two digits such that deleting any number of its digits never gives another prime with greater than or equal to two digits. [Xayah]

Submitted: 2021-01-24 02:21:07;   Last Modified: 2021-01-24 14:10:21.
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