Brain Teasers
61, 691, 163
What number comes next in the sequence:
61, 691, 163, 487, 4201, ?
61, 691, 163, 487, 4201, ?
Hint
Reverse the digits of the numbers.Answer
9631. The sequence consists of the prime numbers which, when their digits are reversed, are perfect squares.Hide Hint Show Hint Hide Answer Show Answer
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