96596...85783 (276-digits)

This number is a probable-prime (likely to be a prime but we have not (re-)proven it on this site).

    965963 9619599579 5595395194 9947945943 9419399379 3593393192 9927925923
9219199179 1591391190 9907905903 9018998978 9589389188 9887885883 8818798778
7587387186 9867865863 8618598578 5585385184 9847845843 8418398378 3583383182
9827825823 8218198178 1581381180 9807805803 8017997977 9579379178 9787785783

The largest emirp formed from reverse concatenation of n consecutive 3-digit odd numbers (n=92). [Gupta]