Is 2642639 a Prime Number

YES
2642639 is a prime number.
2642639 is not a composite number, it only has factor 1 and itself.

Prime Index of 2642639

Prime Numbe Index: 192750 th
The 2642639 th prime number: 43670461
Hex format: 2852CF
Binary format: 0b1010000101001011001111

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