11111...11111 (35-digits)
This number is a prime.
11111 1121112211 1121111211 1222111111
Just showing those entries submitted by 'Jeong': (Click here to show all)
Write this prime 5 digits per line and the 2's will form the number 1:
11111 11211 12211 11211 11211 12221 11111[Jeong]
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell