10013...01347 (91-digits)

This number is a prime.

1 0013471001 3581001369
1001380100 1391100140 2100141310 0140210013 9110013801 0013691001 3581001347

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The smallest prime formed from the concatenation of n consecutive n-digit self numbers in the pattern {a, b, c, d, e, f, g, f, e, d, c, b, a}, i.e., {1001347, 1001358, 1001369, 1001380, 1001391, 1001402, 1001413, 1001402, 1001391, 1001380, 1001369, 1001358, 1001347}, (case n=7). [Bajpai]

Submitted: 2019-05-16 18:04:22; Last Modified: 2020-06-18 13:58:24.