λ
Sigma Notebook

1,991,059

7 × 461 × 617
Deficient Odd Composite

1,991,059 is odd and not a perfect square. Its factorization is 7 × 461 × 617 and its 8 divisors sum to 2,284,128.

Prime Factor Structure

Factorization String 7 × 461 × 617
Distinct Prime Factors 3
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 8
Divisor Sum (σ) 2,284,128
Proper Divisor Sum 293,069
Digit Sum / Digital Root 34 (Root: 7)
Adjacent Primes #1991047 ← → #1991063

Radix Representation

Decimal 1991059
Binary 111100110000110010011 (21 bits)
Octal 0o7460623
Hexadecimal 0x1E6193

Divisor Catalog (8)

1 7 461 617 3,227 4,319 284,437 1,991,059

Collatz Trajectory (122 steps to reach 1)

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

1,991,059 5,973,178 2,986,589 8,959,768 4,479,884 2,239,942 1,119,971 3,359,914 1,679,957 5,039,872 2,519,936 1,259,968 629,984 314,992 157,496 78,748 39,374 19,687 59,062 29,531 88,594 44,297 132,892 66,446 33,223 99,670 49,835 149,506 74,753 224,260 112,130 56,065 168,196 84,098 42,049 126,148 63,074 31,537 94,612 47,306 23,653 70,960 35,480 17,740 8,870 4,435 13,306 6,653 19,960 9,980 4,990 2,495 7,486 3,743 11,230 5,615 16,846 8,423 25,270 12,635

More profiles

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