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Three Distinct Divisor Trial (Posted on 2022-10-15)

Determine the minimum value of a prime number P such that each of P-1 and P+1 has at least three distinct prime divisors.

No Solution Yet Submitted by K Sengupta

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The first is 181. The next is 307. Below are P, and then P-1 and P+1 with 3 factors listed. Program is here.

181

180 2 3 5

182 2 7 13

307

306 2 3 17

308 2 7 11

Edited on October 15, 2022, 7:52 am

Posted by Steven Lord on 2022-10-15 07:52:12

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