R=range
N=int(input())
P=[]
C=[0]*N
for i in R(2,N):
	if C[i]<1:
		P+=[i];j=i*i
		while j<N:C[j],j=1,j+i
P+=[N]*N
a=0
for i in R(N):
	for j in R(i+1,N):
		if P[i]*P[j]*P[j+1]*P[j+2]>N:break
		for k in R(j+1,N):
			if P[i]*P[j]*P[k]*P[k+1]>N:break
			for m in R(k+1,N):
				if P[i]*P[j]*P[k]*P[m]>N:break
				a+=1
print(a)