61

This number is a prime.

Single Curio View: (Seek other curios for this number)

The smallest prime number with only one "6" that converts to a semiprime if the 6 is changed to a 9. The sequence begins 61, 269, 463, 601, etc. See PC10000...14363 (1000-digits). [Jeremy]

Submitted: 2020-07-14 01:38:36; Last Modified: 2020-07-16 11:23:44.