Q: Is 3,721,872 a Prime Number?
A: No, 3,721,872 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 3721872 can be evenly divided by 1 2 3 4 6 7 8 11 12 14 16 19 21 22 24 28 33 38 42 44 48 53 56 57 66 76 77 84 88 106 112 114 132 133 152 154 159 168 176 209 212 228 231 264 266 304 308 318 336 371 399 418 424 456 462 528 532 583 616 627 636 742 798 836 848 912 924 1,007 1,064 1,113 1,166 1,232 1,254 1,272 1,463 1,484 1,596 1,672 1,749 1,848 2,014 2,128 2,226 2,332 2,508 2,544 2,926 2,968 3,021 3,192 3,344 3,498 3,696 4,028 4,081 4,389 4,452 4,664 5,016 5,852 5,936 6,042 6,384 6,996 7,049 8,056 8,162 8,778 8,904 9,328 10,032 11,077 11,704 12,084 12,243 13,992 14,098 16,112 16,324 17,556 17,808 21,147 22,154 23,408 24,168 24,486 27,984 28,196 32,648 33,231 35,112 42,294 44,308 48,336 48,972 56,392 65,296 66,462 70,224 77,539 84,588 88,616 97,944 112,784 132,924 155,078 169,176 177,232 195,888 232,617 265,848 310,156 338,352 465,234 531,696 620,312 930,468 1,240,624 1,860,936 and 3,721,872, with no remainder.
Since 3,721,872 cannot be divided by just 1 and 3,721,872, it is not a prime number.