15997492271

This number is a composite.

                                                                1 5997492271

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The smallest semiprime that is product of two primes whose concatenation (in some order) produces the decimal expansion of Golden Ratio, e.g., 15997492271 = 1618033*9887. The sequence begins: 15997492271, 144005024998661, 1447894809792516806164432719667990034803441, 14478948097925168061644327196682809665374118060693, ... . [Bajpai]

Submitted: 2019-06-25 17:42:21;   Last Modified: 2020-07-29 22:30:34.
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