32.
88
10^10 + 1
19
1
-109
No, it is not a prime number. Prime factorization of 100000001 = 17 x 5882353
257 = 100000001
52 is a number whose digits have a product of 10.
88
10^10 + 1
19
There are two numbers that satisfy the criteria. 38 and 83
It can have up to 5 digits.
81
When using significant digits, the product has only the number of significant digits as the lowest number in the factors. "20" has two significant digits and "310" has three. Therefore, the product has to have two significant digits. 310 × 20 = 6200 6200 already has two significant digits.
The number is 83.
-10