End of Life Ruby 3.1 has reached end of life and gets no more fixes. Switch to Ruby 4.0 →

instance method

Integer#denominator

int.denominator → 1

static VALUE
integer_denominator(VALUE self)
{
    return INT2FIX(1);
}

Returns 1.

See also #coerce #digits #chr #div also in 4.1 · 4.0 · 3.4 · 3.3 · 3.2 · 3.0