λ
Sequence Observatory

7,977,581

29 × 239 × 1151
Deficient Odd Composite

Starting at 7,977,581, the Collatz iteration reaches 1 after 124 steps. The first transition is 23932744; the starting value is odd with 8 positive divisors.

Prime Factor Structure

Factorization String 29 × 239 × 1151
Distinct Prime Factors 3
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 8
Divisor Sum (σ) 8,294,400
Proper Divisor Sum 316,819
Digit Sum / Digital Root 44 (Root: 8)
Adjacent Primes #7977577 ← → #7977583

Radix Representation

Decimal 7977581
Binary 11110011011101001101101 (23 bits)
Octal 0o36335155
Hexadecimal 0x79BA6D

Divisor Catalog (8)

1 29 239 1,151 6,931 33,379 275,089 7,977,581

Collatz Trajectory (124 steps to reach 1)

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

7,977,581 23,932,744 11,966,372 5,983,186 2,991,593 8,974,780 4,487,390 2,243,695 6,731,086 3,365,543 10,096,630 5,048,315 15,144,946 7,572,473 22,717,420 11,358,710 5,679,355 17,038,066 8,519,033 25,557,100 12,778,550 6,389,275 19,167,826 9,583,913 28,751,740 14,375,870 7,187,935 21,563,806 10,781,903 32,345,710 16,172,855 48,518,566 24,259,283 72,777,850 36,388,925 109,166,776 54,583,388 27,291,694 13,645,847 40,937,542 20,468,771 61,406,314 30,703,157 92,109,472 46,054,736 23,027,368 11,513,684 5,756,842 2,878,421 8,635,264 4,317,632 2,158,816 1,079,408 539,704 269,852 134,926 67,463 202,390 101,195 303,586

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