a “ sophie germain ” prime is any positive prime number p for which 2 p + 1 is also prime . the product of all the possible units digits of sophie germain primes greater than 4 is
"in that case , the sophie prime numbers greater than 5 are 7 , 11,23 , 47,59 , . . which yields units digit as 1 , 3,7 and 9 product would be 1 x 3 x 7 x 9 = 189 answer should be c ."
multiply(multiply(multiply(subtract(add(add(subtract(4, 1), add(2, 1)), add(2, 1)), const_10), subtract(add(multiply(2, add(subtract(4, 1), add(2, 1))), 1), const_10)), add(2, 1)), subtract(add(multiply(2, add(add(add(subtract(4, 1), add(2, 1)), add(2, 1)), add(2, 1))), 1), multiply(2, const_10)))