#include<cstdio>
#include<cstring>
#include<algorithm>
#include<iostream>
using namespace std;

class input
{
public:
    input& operator >> (int& x)
    {
        char c=' ';x=0;bool flag=0;
        for(;c<'0' || c>'9';c=getchar()) if(c=='-') flag=1;
        for(;c>='0' && c<='9';c=getchar()) x=x*10+c-'0';
        if(flag) x=-x;
        return *this;
    }
}in;

typedef long long ll;
const int maxn=100010;

int n,k,a[maxn],cnt(0),len(0);
bool vis[maxn];
ll sum[maxn],temp(1);

ll gcd(ll a,ll b) {return b?gcd(b,a%b):a;}

void Pre()
{
    for(int i=1,l(1);i<=n;++i)
    {
        if(!len && a[i]>=k) len=1;
        for(int j=l;j<i;++j) if(!vis[i])
        {
//            cout<<i-1<<' '<<l<<endl;
            if(gcd(a[i],a[j])!=1)
            {
                vis[j]=1;
                if(sum[i-1]-sum[l-1]>=k && len<i-l) len=i-l;
                l=j+1;                
            }
        }
    }
}

int main()
{
    freopen("tarmy.in","r",stdin);
    freopen("tarmy.out","w",stdout);
    
    in>>n>>k;
    for(int i=1;i<=n;++i) in>>a[i],sum[i]=sum[i-1]+a[i];
    Pre();
    printf("%d\n",len);
    fclose(stdin); fclose(stdout);
    return 0;
}