How would the period of the Earth’s revolution around the Sun change if the Earth’s mass became equal to the Sun’s mass

How would the period of the Earth’s revolution around the Sun change if the Earth’s mass became equal to the Sun’s mass and the distance between them did not change? Ignore the influence of other planets.

According to the third generalized Kepler’s law, the period of the Earth’s revolution around the Sun would decrease by √2 times.

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