3 × 7 × 13 × 61

Prime Factor Structure

Factorization String 3 × 7 × 13 × 61

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 27,776

Proper Divisor Sum 11,123

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #16651 ← → #16657

1 3 7 13 21 39 61 91 183 273 427 793 1,281 2,379 5,551 16,653

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

16,653 49,960 24,980 12,490 6,245 18,736 9,368 4,684 2,342 1,171 3,514 1,757 5,272 2,636 1,318 659 1,978 989 2,968 1,484 742 371 1,114 557 1,672 836 418 209 628 314 157 472 236 118 59 178 89 268 134 67 202 101 304 152 76 38 19 58 29 88 44 22 11 34 17 52 26 13 40 20

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