Q: Is 3,345,678 a Prime Number?
A: No, 3,345,678 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 3345678 can be evenly divided by 1 2 3 6 7 9 14 18 21 27 42 53 54 63 106 126 159 167 189 318 334 371 378 477 501 742 954 1,002 1,113 1,169 1,431 1,503 2,226 2,338 2,862 3,006 3,339 3,507 4,509 6,678 7,014 8,851 9,018 10,017 10,521 17,702 20,034 21,042 26,553 31,563 53,106 61,957 63,126 79,659 123,914 159,318 185,871 238,977 371,742 477,954 557,613 1,115,226 1,672,839 and 3,345,678, with no remainder.
Since 3,345,678 cannot be divided by just 1 and 3,345,678, it is not a prime number.