8313667333393

This number is a prime.

                                                              831 3667333393

+ The largest left/right truncatable prime (first cut the left, then cut the right, and so on, until you reach a one-digit prime): 8313667333393, 313667333393, 31366733339, 1366733339, 136673333, 36673333, 3667333, 667333, 66733, 6733, 673, 73, 7. [Rivera]

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