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:
        if B>=i*2:
            L[i]+=(2**N)-L[i*2]
        else:
            L[i]+=1
    elif 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
if B>=6 and 4>=A:
            L[2]+=(2**N)-2
if B>=8 and 6>=A:
            L[2]+=(2**N)-2
if B>=10 and 6>=A:
            L[2]+=(2**N)-2
if B>=10 and 8>=A:
            L[2]+=(2**N)-2
if B>=10 and 4>=A:
            L[2]+=(2**N)-2
mod=10**9+7

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