36132...24361 (90-digits)

This number is a prime.

                                                       3613242892 5622519616
9144121100 8164493625 1694114916 2536496481 1001211441 6919622525 6289324361

Just showing those entries submitted by 'Gupta': (Click here to show all)

The largest prime less than a googol obtained by concatenation of the consecutive squares 361 down to 1 and from 1 to 361 again. [Gupta]