Compare 861221 vs 861491
| Property | 861221 | 861491 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 8612211 | 8614911 |
| Prime factorization | 861221 | 861491 |
| Divisors count | 2 | 2 |
| Divisors | 1, 861221 | 1, 861491 |
| Number of properties | 3 | 6 |
| Additive primes | 26417th | |
| Chen primes | 26347th | |
| Good primes | 2421st | |
| Isolated primes | 54066th | |
| Primes | 68439th | 68451st |
| Sophie germain primes | 6847th | 6850th |
| Twin primes (1st member) | 7189th | |
| Roman numberals | ||
| Base 2 | 110100100100001001012 | 110100100101001100112 |
| Base 3 | 11212021010023 | 11212022020023 |
| Base 4 | 31021002114 | 31021103034 |
| Base 5 | 2100243415 | 2100314315 |
| Base 6 | 302430456 | 302442156 |
| Base 7 | 102145647 | 102154317 |
| Base 8 | 32220458 | 32224638 |
| Base 9 | 15523329 | 15526629 |
| Base 10 | 86122110 | 86149110 |
| Base 11 | 53905911 | 53928411 |
| Base 12 | 35648512 | 35666b12 |
| Base 13 | 241cca13 | 24217713 |
| Base 14 | 185bdb14 | 185d5114 |
| Base 15 | 12029b15 | 1203cb15 |
| Base 16 | d242516 | d253316 |