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This article mainly introduces java how to achieve prime number replacement, the article introduces in great detail, has a certain reference value, interested friends must read it!

Replace the first number of two-digit * 3 with any number, and six of the nine possible values are primes: 13, 23, 43, 53, 73, and 83.

Replace the third and fourth digits of the five-digit 56-digit number with the same arbitrary number, and you get the smallest example that seven of the ten possible values are primes: 56003, 56113, 56333, 56443, 56663, 56773 and 56993. 56003 is not only the smallest member of this family, but also the smallest prime number that satisfies this property.

By replacing some numbers (not necessarily adjacent) with the same arbitrary numbers, eight primes can sometimes be obtained, and the minimum prime number satisfying this property can be obtained.

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