λ
Sequence Observatory

1,948,349

13 × 149873
Deficient Odd Composite

Starting at 1,948,349, the Collatz iteration reaches 1 after 215 steps. The first transition is 5845048; the starting value is odd with 4 positive divisors.

Prime Factor Structure

Factorization String 13 × 149873
Distinct Prime Factors 2
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 4
Divisor Sum (σ) 2,098,236
Proper Divisor Sum 149,887
Digit Sum / Digital Root 38 (Root: 2)
Adjacent Primes #1948343 ← → #1948369

Radix Representation

Decimal 1948349
Binary 111011011101010111101 (21 bits)
Octal 0o7335275
Hexadecimal 0x1DBABD

Divisor Catalog (4)

1 13 149,873 1,948,349

Collatz Trajectory (215 steps to reach 1)

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

1,948,349 5,845,048 2,922,524 1,461,262 730,631 2,191,894 1,095,947 3,287,842 1,643,921 4,931,764 2,465,882 1,232,941 3,698,824 1,849,412 924,706 462,353 1,387,060 693,530 346,765 1,040,296 520,148 260,074 130,037 390,112 195,056 97,528 48,764 24,382 12,191 36,574 18,287 54,862 27,431 82,294 41,147 123,442 61,721 185,164 92,582 46,291 138,874 69,437 208,312 104,156 52,078 26,039 78,118 39,059 117,178 58,589 175,768 87,884 43,942 21,971 65,914 32,957 98,872 49,436 24,718 12,359

More profiles

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