150
It can have up to 5 digits.
14 is a factor of 532.
81
You had me until "product." The product of 4 digits can't be prime.
No factor of 9 has three digits. 450 is a three-digit multiple of 150 (and of 9) with a digit sum of 9.
It can have up to 5 digits.
14 is a factor of 532.
Six.
81
You had me until "product." The product of 4 digits can't be prime.
No factor of 9 has three digits. 450 is a three-digit multiple of 150 (and of 9) with a digit sum of 9.
362x(3x6)
-109
1
121
The number is 83.
-10