31728...99999 (1000-digits)

This number is a probable-prime (likely to be a prime but we have not (re-)proven it on this site).

Just showing those entries submitted by 'Rivera': (Click here to show all)

(513*512*511*…*106*105)/(104+103+102+...4+3+2)-1 is a titanic prime obtained by an arithmetic expression using once each integer from 1 to 513. [Rivera]