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15961...11953 (28-digits)
This number is a prime.
15961653 1711177018 3018911953
Just showing those entries submitted by 'Gupta': (Click here to show all)
The smallest prime formed from concatenation of seven
consecutive triangular numbers, i.e., 1596, 1653, 1711,
1770, 1830, 1891 and 1953. [Gupta]
Printed from the PrimePages <primes.utm.edu> © G. L. Honaker and Chris K. Caldwell