Answer:
GCF = 509089201
for the values 509089201, 509089201
Solution by Factorization:
The factors of 509089201 are: 1, 107, 1663, 2861, 177941, 306127, 4757843, 509089201
The factors of 509089201 are: 1, 107, 1663, 2861, 177941, 306127, 4757843, 509089201
Then the greatest common factor is 509089201.