3 × 5² × 13² × 17

Prime Factor Structure

Factorization String 3 × 5^2 × 13^2 × 17

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 36

Divisor Sum (σ) 408,456

Proper Divisor Sum 192,981

Digit Sum / Digital Root 24 (Root: 6)

Adjacent Primes #215471 ← → #215483

1 3 5 13 15 17 25 39 51 65 75 85 169 195 221 255 325 425 507 663 845 975 1,105 1,275 2,535 2,873 3,315 4,225 5,525 8,619 12,675 14,365 16,575 43,095 71,825 215,475

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

215,475 646,426 323,213 969,640 484,820 242,410 121,205 363,616 181,808 90,904 45,452 22,726 11,363 34,090 17,045 51,136 25,568 12,784 6,392 3,196 1,598 799 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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