This number is a prime.
The largest 4-digit distinct-odd-digit prime, concatenated from two double-digit primes, i.e., 71, 59. The four smaller are 1753, 1759, 1973 and 3719. [Loungrides]
7159 when written in words as SEVENONEFIVENINE has alternating consonants and vowels. This is the largest 4-digit prime number with this property. [Homewood]
(There is one curio for this number that has not yet been approved by an editor.)
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