* * %$p - 1$% has a large prime factor %$r$%,
* * %$p + 1$% has a large prime factor %$s$%, and
* * %$r - 1$% has a large prime factor %$t$%.
* * %$p - 1$% has a large prime factor %$r$%,
* * %$p + 1$% has a large prime factor %$s$%, and
* * %$r - 1$% has a large prime factor %$t$%.