 |
10027 (another Prime Pages' Curiosity) |
|
|
|
Curios:
Curios Search:
Participate: 
|
The smallest five-digit composite number ending in 1, 3, 7 or 9 that yields no primes if the first digit is changed. I.e., 20027, 30027, 40027, 50027, 60027, 70027, 80027 and 90027 are all composite.
Prime Curios! © 1999-2012 (all rights
reserved)
|