This number is a prime.
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483148266971 is the start of run on eight consecutive primes p1, p2, ... , p8 such that p1, p1.p2, p1.p2.p3, ... , p1.p2.p3.p4.p5.p6.p7.p8 are prime numbers, where the dot represents concatenation. Found by Giovanni Resta. [Rivera]