In order to prevent communication interruptions that may be caused by the Tangjiashan dammed lake lagoon, to facilitate the communication of the evacuated people, and to continue the love, on June 2 this year, Mianyang Tietong set up a free communication service station for emergency evacuation on the left side of Jiang Wan's tomb in Xishan Park. Opened a love free phone number, the number consists of seven digits: the first digit from the left is the product of the smallest prime number and 3, the second digit is the smallest odd number, the last digit is 2 less than the smallest composite number, and the rest is the smallest natural number. What is the love toll-free number.
为防范唐家山堰塞湖泻流可能造成的通信中断，方便疏散群众的通信联系，将爱心继续延续，今年6月2日绵阳铁通在西山公园蒋琬墓左侧设立应急疏散免费通信服务站，开通了爱心免费电话，号码由七位数组成：左起第一位是最小的质数与3的乘积，第二位是最小的奇数，最末一位数比最小的合数少2，其余各位是最小的自然数．该爱心免费电话号码是多少．
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