λ
Math Directory

2,118,967

23 × 181 × 509
Deficient Odd Composite

2,118,967 factors as 23 × 181 × 509. Its 8 positive divisors give a proper-divisor sum of 108,713, so this integer is deficient. The Collatz stopping time is 148 steps.

Prime Factor Structure

Factorization String 23 × 181 × 509
Distinct Prime Factors 3
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 8
Divisor Sum (σ) 2,227,680
Proper Divisor Sum 108,713
Digit Sum / Digital Root 34 (Root: 7)
Adjacent Primes #2118959 ← → #2118973

Radix Representation

Decimal 2118967
Binary 1000000101010100110111 (22 bits)
Octal 0o10052467
Hexadecimal 0x205537

Divisor Catalog (8)

1 23 181 509 4,163 11,707 92,129 2,118,967

Collatz Trajectory (148 steps to reach 1)

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

2,118,967 6,356,902 3,178,451 9,535,354 4,767,677 14,303,032 7,151,516 3,575,758 1,787,879 5,363,638 2,681,819 8,045,458 4,022,729 12,068,188 6,034,094 3,017,047 9,051,142 4,525,571 13,576,714 6,788,357 20,365,072 10,182,536 5,091,268 2,545,634 1,272,817 3,818,452 1,909,226 954,613 2,863,840 1,431,920 715,960 357,980 178,990 89,495 268,486 134,243 402,730 201,365 604,096 302,048 151,024 75,512 37,756 18,878 9,439 28,318 14,159 42,478 21,239 63,718 31,859 95,578 47,789 143,368 71,684 35,842 17,921 53,764 26,882 13,441

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