Sorry but I don't know how to deal big number.
Here's another CODY problem that deals with something similar:
Find the numeric mean of the prime numbers in a matrix.
Is this matrix orthogonal?
Insert zeros into vector
Symmetry of vector
Pandigital Multiples of 11 (based on Project Euler 491)
Longest run of consecutive numbers
Highest powers in factorials
Community Problem 500!
Pandigital Factors (Based on Euler 491)
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