198,513

3² × 7 × 23 × 137

Prime Factor Structure

Factorization String 3^2 × 7 × 23 × 137

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Total Divisors 24

Divisor Sum (σ) 344,448

Proper Divisor Sum 145,935

Digit Sum / Digital Root 27 (Root: 9)

Adjacent Primes #198503 ← → #198529

1 3 7 9 21 23 63 69 137 161 207 411 483 959 1,233 1,449 2,877 3,151 8,631 9,453 22,057 28,359 66,171 198,513

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

198,513 595,540 297,770 148,885 446,656 223,328 111,664 55,832 27,916 13,958 6,979 20,938 10,469 31,408 15,704 7,852 3,926 1,963 5,890 2,945 8,836 4,418 2,209 6,628 3,314 1,657 4,972 2,486 1,243 3,730 1,865 5,596 2,798 1,399 4,198 2,099 6,298 3,149 9,448 4,724 2,362 1,181 3,544 1,772 886 443 1,330 665 1,996 998 499 1,498 749 2,248 1,124 562 281 844 422 211

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