What is the smallest prime number with two sevens in it? Pick
A) 77	B) 177	C) 277	D) 377	E) 108794769
The smallest positive integers with two sevens are 77, 177, 277, . . . . The first   integer with two sevens that does not end with two sevens is 707.   77 = 7 11, and 177 is divisible by 3 because the sum of its digits is. So now you just need to   check that 277 is prime. There is no particular shortcut to see this – test divisibility by 2, 3, 5,   7, 11, and 13.   correct answer 277
<result>C</result>
What is the smallest prime number with two sevens in it?