81
121
225 = (15)2 2*2*5=20 3 digits in 225
It can have up to 5 digits.
The product of a 4-digit multiplicand and a 1-digit multiplier can have either 4 or 5 digits. If the 4-digit number is multiplied by a multiplier of 1 to 9, the product will typically have 4 digits. However, if the multiplicand is multiplied by 10 (the maximum value for a 1-digit number), the product can reach a maximum of 5 digits. Thus, the product can range from 4 to 5 digits, depending on the specific numbers involved.
81
1
121
225 = (15)2 2*2*5=20 3 digits in 225
The only three-digit number that fits the criteria of being a square number and having a product of its digits equal to two is 128. This is because 128 is a square number (11^2 = 121, 12^2 = 144) and the product of its digits (1 x 2 x 8) equals 16, which is not equal to two. Therefore, there is no three-digit number that meets all the given conditions.
It can have up to 5 digits.
81
Six.
49
Every square of a 4 digit number has more than four digits.
You had me until "product." The product of 4 digits can't be prime.
81...........
362x(3x6)