local mce, mfl, msq, mmi, mma, mab = math.ceil, math.floor, math.sqrt, math.min, math.max, math.abs
local mod = 1000000007
local function bmul(x, y)
  local x1, y1 = mfl(x / 31623), mfl(y / 31623)
  local x0, y0 = x - x1 * 31623, y - y1 * 31623
  return (x1 * y1 * 14122 + (x1 * y0 + x0 * y1) * 31623 + x0 * y0) % mod
end
local function badd(x, y)
  return (x + y) % mod
end

local function bsub(x, y)
  return x < y and x - y + mod or x - y
end

local function modpow(src, pow)
  local res = 1
  while 0 < pow do
    if pow % 2 == 1 then
      res = bmul(res, src)
      pow = pow - 1
    end
    src = bmul(src, src)
    pow = mfl(pow / 2)
  end
  return res
end

local n, k = io.read("*n", "*n")
local ret = 0

local primecnt = {}
local t = {}
for i = 1, k do t[i] = 0 end
for i = k, 1, -1 do
  local c = mfl(k / i)
  local z = modpow(c, n)
  for j = 2, c do
    z = bsub(z, t[j * i])
  end
  t[i] = z
  ret = badd(ret, bmul(i, z))
end
print(ret)
