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注定goto多次，注定慢... ...

@echo off & setlocal enabledelayedexpansion
:: 逐个字符找【11位，以1[34578]开头】的数字

for /f "delims=" %%i in ('type 1.txt') do (
	call :split "%%i"
)

pause & exit /b

:: ------------------------------------------

:split [line]
if not defined line set line=%~1
set n=!line:~,1!
if not defined n goto :eof
if !n! leq 9 (
	if !n! geq 0 (
		set _num=1
	)
)
if defined _num (
	set "_num="
	set num=!num!!n!
) else set "num="
if "!num!" neq "" if "!num:~10!" neq "" (
	set _legal=
	if "!num:~,1!"=="1" (
		for %%i in (3,4,5,7,8) do (
			if not defined _legal (
				if "!num:~1,1!"=="%%i" set _legal=1
			)
		)
	)
	if defined _legal (
		echo;!num!& set "num="
	) else set num=!num:~1!
)
set line=!line:~1!
if "!line!" neq "" goto :split
goto :eof
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回家路上

JS，存为.bat运行

@set @n=0; /* & echo off & type 1.txt|cscript -nologo -e:jscript "%~f0" & pause & exit/b & rem */
WScript.StdIn.ReadAll()
	.replace(/\s/g, "")
	.replace(/(1[34578]\d{9})/g, function(a,b){
		WScript.Echo(b);
	});
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