89107...70827 (36-digits)

This number is a prime.

                                     891077 2157210817 8488688825 7701070827

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The smaller in a set of twin primes whose product is the concatenation of two successive integers, i.e., 891077215721081784886888257701070827*891077215721081784886888257701070829 = 794018604377235322848433897872605582~794018604377235322848433897872605583. Is there another set of twin primes with this property? [Israel]