U.S. prosecutors here are finding that the sworn testimony of Korean businessman Tongsun Park conflicts sharply with some lists of purported political payments that Park maintained, it was learned today.

One possible conclusion to be drawn from his testimony, the sources said, is that Park has exaggerating his Washington influence and gift-giving to impress officials of the Seoul government in written reports.

In many instances, according to sources close to the case, Park has testified that he paid sums to members of Congress that are far below the dollar amounts on lists in the possession of Justice Department attorneys and congressional investigators.

The principal list is one that Jay Shin Ryu, a former employee of Park's, furnished to authorities. This document, which was allegedly complied at Park's direction in 1972, contains the names of an estimated 120 members of Congress and some executive branch officials to whom Park was reported he paid tens of thousands of dollars.

Another list was one that was seized and copied by U.S. customs agents when Park passed through Anchorage, Alaska, en route to Washington, D.C., in December, 1973. It reportedly contains the names of about 80 House members and 10 senators, with figures representing large dollar amounts next to their names.

A third list believed to correspond more closely with Park's testimony here is a personal diary he kept in 1972.

Park has passed a series of lie detector tests in responding "No" when asked - name by name - if he gave money to many officials on his first two lists, according to sources familiar with his closed-door interrogation here.