43475...27131 (45-digits)

This number is a prime.

                           43475 3596167717 3798389971 0110310710 9113127131

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The smallest prime formed by concatenation of nineteen consecutive primes (43,47,53,59,61,67,71,73,79,83,89,97,101,103,107,109,113,127,131). [Gupta]