21
your answer is 3 147 * 3 = 441 21 * 21 = 441
You are talking about perfect square numbers (the product of a number multiplied by itself. Please see related link with a bit more information
2 + 3 + 5 + 431 = 441
3*3*7*7 = 441
3x3x7x7
21
3 x 3 x 7 x 7 = 441
3 x 3 x 7 x 7 = 441
No, prime numbers refer to whole numbers, not decimals.
your answer is 3 147 * 3 = 441 21 * 21 = 441
You are talking about perfect square numbers (the product of a number multiplied by itself. Please see related link with a bit more information
21 multiplies to 21 to make it 441
1764
2 + 3 + 5 + 431 = 441
3*3*7*7 = 441
It is: 3*3*7*7 = 441