What is the largest possible magnitude of the acceleration of the electron due to the magnetic field?

Thank you for posting your question here at . But your question seems incomplete. I will assume you based the situation below:

An electrons moves at 2.0x10^6 m/s through a region in which there is a magnetic field of unspecified direction and magnitude 7.4x10^-2 T. 

The  largest possible magnitude of the acceleration of the electron due to the magnetic field is = 2.6 × 10 ¹⁶ m / s ²