A,B,N=map(int,input().split())
L=[0 for i in range(11)]

for i in range(B,A-1,-1):
    #print(i)
    if i*2>B:
        L[i]=1
    elif i==5 or i==4:
        if B>=i*2:
            L[i]=(2**N)-L[i*2]
        else:
            L[i]=1
    elif i==3:
        if B>=3*i:
            L[i]=(3**N)-L[i*3]-L[i*2]
        elif B>=2*i:
            L[i]=(2**N)-L[i*2]
        else:
            L[i]=1
    elif i==2:
        if B>=5*i:
            L[i]=(5**N)-L[i*5]-L[i*3]-(2**N)
        elif B>=4*i:
            L[i]=(4**N)-L[i*3]-(2**N)
        elif B>=3*i:
            L[i]=(3**N)-L[i*3]-L[i*2]
        elif B>=2*i:
            L[i]=(2**N)-L[i*2]
        else:
            L[i]=1
mod=10**9+7

ans=1
for i in range(1,11):
    ans=ans*pow(i,L[i],mod)
    ans%=mod
print(ans)