10512...10231 (24-digits)
This number is a prime.
1051 2013615317 1190210231
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The smallest prime formed from concatenation of eight
consecutive triangular numbers, i.e., 105, 120, 136, 153,
171, 190, 210 and 231. [Gupta]
Submitted: 2019-04-24 15:28:47; Last Modified: 2020-06-13 12:50:40.
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