最大 さいだい有効 ゆうこう数字 すうじじゃないです
saidaiyūkōsūjijanaidesu

Noun
Desu Copula
Negation Auxiliary

The polite negative form of 最大有効数字

1. It's not the most significant digit.; It's not the largest effective digit.

Negative
Polite
Casual Register
Computing