Polyarylate resin and electrophotographic photosensitive member

A polyarylate resin comprising

• repeating units represented by formulas (1), (2), (3), and (4), wherein
• a third percentage is greater than 0% and less than 50%, the third percentage being a percentage of the number of repeats of the repeating unit represented by the formula (3) relative to a total of the number of repeats of the repeating unit represented by the formula (1) and the number of repeats of the repeating unit represented by the formula (3), and
• a fourth percentage is at least 35% and less than 70%, the fourth percentage being a percentage of the number of repeats of the repeating unit represented by the formula (4) relative to a total of the number of repeats of the repeating unit represented by the formula (2) and the number of repeats of the repeating unit represented by the formula (4),
• where in the formula (1),
• R1 and R2 each represent a methyl group and X represents a divalent group represented by formula (X1), or
• R1 and R2 each represent a hydrogen atom and X represents a divalent group represented by formula (X2),
• where in the formulas (X1) and (X2), * represents a bond, and
• wherein
• a first percentage differs from a second percentage and the fourth percentage,
• the third percentage differs from the second percentage and the fourth percentage,
• the first percentage is a percentage of the number of repeats of the repeating unit represented by the formula (1) relative to the total of the number of repeats of the repeating unit represented by the formula (1) and the number of repeats of the repeating unit represented by the formula (3), and
• the second percentage is a percentage of the number of repeats of the repeating unit represented by the formula (2) relative to the total of the number of repeats of the repeating unit represented by the formula (2) and the number of repeats of the repeating unit represented by the formula (4).