3 × 5 × 1381

Prime Factor Structure

Factorization String 3 × 5 × 1381

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 33,168

Proper Divisor Sum 12,453

Digit Sum / Digital Root 15 (Root: 6)

Adjacent Primes #20707 ← → #20717

1 3 5 15 1,381 4,143 6,905 20,715

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

20,715 62,146 31,073 93,220 46,610 23,305 69,916 34,958 17,479 52,438 26,219 78,658 39,329 117,988 58,994 29,497 88,492 44,246 22,123 66,370 33,185 99,556 49,778 24,889 74,668 37,334 18,667 56,002 28,001 84,004 42,002 21,001 63,004 31,502 15,751 47,254 23,627 70,882 35,441 106,324 53,162 26,581 79,744 39,872 19,936 9,968 4,984 2,492 1,246 623 1,870 935 2,806 1,403 4,210 2,105 6,316 3,158 1,579 4,738

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