3 × 19² × 199

Prime Factor Structure

Factorization String 3 × 19^2 × 199

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 12

Divisor Sum (σ) 304,800

Proper Divisor Sum 89,283

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #215507 ← → #215521

1 3 19 57 199 361 597 1,083 3,781 11,343 71,839 215,517

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

215,517 646,552 323,276 161,638 80,819 242,458 121,229 363,688 181,844 90,922 45,461 136,384 68,192 34,096 17,048 8,524 4,262 2,131 6,394 3,197 9,592 4,796 2,398 1,199 3,598 1,799 5,398 2,699 8,098 4,049 12,148 6,074 3,037 9,112 4,556 2,278 1,139 3,418 1,709 5,128 2,564 1,282 641 1,924 962 481 1,444 722 361 1,084 542 271 814 407 1,222 611 1,834 917 2,752 1,376

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