73

This number is a prime.

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73 is the largest member of a 17-integer matrix definite quadratic that represents all prime numbers: {2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 67, 73}. [Bhargava]

Submitted: 2024-02-09 13:31:15; Last Modified: 2024-02-09 13:34:02.