Correct: 7 777 777, 1 000 000, 9 999 9999, 6035813 , 1 234 567, 5 630 248, 3 568941, 1 000 001, 10 00 000, 4 890 002, Incorrect: 777 777, 1 000,01000, 256 802,1, 0,000007, 10 000 000, 1 00 000, 0 835 419,

Am I a 7-digit number?

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