Question

I am a 3-digit number. I have2 factors. My digits add up to 14. All of my digits are different numbers, and each digit only has 2 factors. My digits increase in size from left to right. What number am I?

Answer 1

257

Explanation:

The two factors of 357 are 1 and 257.

2+5+7=14

2 is not 5 is not 7

2 is prime with 2 factors, 5 is prime with 2 factors, 7 is prime with 2 factors

2<5<7