13579...89819 (87-digits)

This number is a prime.

1357911 3151719112
3252729213 3353739314 3454749415 3555759516 3656769617 3757779718 3858789819

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The largest prime less than a googol obtained by concatenating the digit reversal of first n odd numbers, (case n=45). [Bajpai]

Submitted: 2020-07-06 21:05:14; Last Modified: 2020-07-07 00:30:06.